diff --git a/coconut/control/control.go b/coconut/control/control.go
index 8e82b93d..01a18b49 100644
--- a/coconut/control/control.go
+++ b/coconut/control/control.go
@@ -40,6 +40,7 @@ import (
 	"text/template"
 	"time"
 
+	commonpb "github.com/AliceO2Group/Control/common/protos"
 	"github.com/fatih/color"
 
 	"github.com/xlab/treeprint"
@@ -365,7 +366,13 @@ func CreateEnvironment(cxt context.Context, rpc *coconut.RpcClient, cmd *cobra.C
 				WithError(err).
 				Fatal("command finished with error")
 		}
-		_, err = rpc.NewAutoEnvironment(cxt, &pb.NewAutoEnvironmentRequest{WorkflowTemplate: wfPath, Vars: extraVarsMap, Id: id}, grpc.EmptyCallOption{})
+		_, err = rpc.NewAutoEnvironment(cxt, &pb.NewAutoEnvironmentRequest{
+			WorkflowTemplate: wfPath,
+			Vars:             extraVarsMap,
+			Id:               id,
+			RequestUser: &commonpb.User{
+				Name: getUserAndHost(),
+			}}, grpc.EmptyCallOption{})
 		if err != nil {
 			return err
 		}
@@ -424,9 +431,23 @@ func CreateEnvironment(cxt context.Context, rpc *coconut.RpcClient, cmd *cobra.C
 
 	var response *pb.NewEnvironmentReply
 	if asynchronous {
-		response, err = rpc.NewEnvironmentAsync(cxt, &pb.NewEnvironmentRequest{WorkflowTemplate: wfPath, Vars: extraVarsMap, Public: public}, grpc.EmptyCallOption{})
+		response, err = rpc.NewEnvironmentAsync(cxt, &pb.NewEnvironmentRequest{
+			WorkflowTemplate: wfPath,
+			Vars:             extraVarsMap,
+			Public:           public,
+			RequestUser: &commonpb.User{
+				Name: getUserAndHost(),
+			},
+		}, grpc.EmptyCallOption{})
 	} else {
-		response, err = rpc.NewEnvironment(cxt, &pb.NewEnvironmentRequest{WorkflowTemplate: wfPath, Vars: extraVarsMap, Public: public}, grpc.EmptyCallOption{})
+		response, err = rpc.NewEnvironment(cxt, &pb.NewEnvironmentRequest{
+			WorkflowTemplate: wfPath,
+			Vars:             extraVarsMap,
+			Public:           public,
+			RequestUser: &commonpb.User{
+				Name: getUserAndHost(),
+			},
+		}, grpc.EmptyCallOption{})
 	}
 	if err != nil {
 		return
@@ -588,7 +609,13 @@ func ControlEnvironment(cxt context.Context, rpc *coconut.RpcClient, cmd *cobra.
 	}
 
 	var response *pb.ControlEnvironmentReply
-	response, err = rpc.ControlEnvironment(cxt, &pb.ControlEnvironmentRequest{Id: args[0], Type: pb.ControlEnvironmentRequest_Optype(pb.ControlEnvironmentRequest_Optype_value[event])}, grpc.EmptyCallOption{})
+	response, err = rpc.ControlEnvironment(cxt, &pb.ControlEnvironmentRequest{
+		Id:   args[0],
+		Type: pb.ControlEnvironmentRequest_Optype(pb.ControlEnvironmentRequest_Optype_value[event]),
+		RequestUser: &commonpb.User{
+			Name: getUserAndHost(),
+		},
+	}, grpc.EmptyCallOption{})
 	if err != nil {
 		return
 	}
@@ -717,7 +744,15 @@ func DestroyEnvironment(cxt context.Context, rpc *coconut.RpcClient, cmd *cobra.
 		keepTasks = false
 	}
 
-	_, err = rpc.DestroyEnvironment(cxt, &pb.DestroyEnvironmentRequest{Id: envId, KeepTasks: keepTasks, AllowInRunningState: allowInRunningState, Force: force}, grpc.EmptyCallOption{})
+	_, err = rpc.DestroyEnvironment(cxt, &pb.DestroyEnvironmentRequest{
+		Id:                  envId,
+		KeepTasks:           keepTasks,
+		AllowInRunningState: allowInRunningState,
+		Force:               force,
+		RequestUser: &commonpb.User{
+			Name: getUserAndHost(),
+		},
+	}, grpc.EmptyCallOption{})
 	if err != nil {
 		return
 	}
diff --git a/coconut/control/controlutil.go b/coconut/control/controlutil.go
index a6d719b3..7f6642e0 100644
--- a/coconut/control/controlutil.go
+++ b/coconut/control/controlutil.go
@@ -28,6 +28,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"os"
+	"os/user"
 	"strconv"
 	"strings"
 	"time"
@@ -191,3 +193,20 @@ func formatNumber(numberOfMachines int32) string {
 	}
 	return nMString
 }
+
+func getUserAndHost() string {
+	userName := "unknown"
+	hostName := "unknown"
+
+	currentUser, err := user.Current()
+	if err == nil {
+		userName = currentUser.Username
+	}
+
+	currentHost, err := os.Hostname()
+	if err == nil {
+		hostName = currentHost
+	}
+
+	return fmt.Sprintf("%s@%s", userName, hostName)
+}
diff --git a/coconut/protos/o2control.pb.go b/coconut/protos/o2control.pb.go
index 8c846cff..dbd2b96e 100644
--- a/coconut/protos/o2control.pb.go
+++ b/coconut/protos/o2control.pb.go
@@ -998,6 +998,7 @@ type NewEnvironmentRequest struct {
 	Vars             map[string]string `protobuf:"bytes,2,rep,name=vars,proto3" json:"vars,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	Public           bool              `protobuf:"varint,3,opt,name=public,proto3" json:"public,omitempty"`
 	AutoTransition   bool              `protobuf:"varint,4,opt,name=autoTransition,proto3" json:"autoTransition,omitempty"`
+	RequestUser      *protos.User      `protobuf:"bytes,5,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *NewEnvironmentRequest) Reset() {
@@ -1060,6 +1061,13 @@ func (x *NewEnvironmentRequest) GetAutoTransition() bool {
 	return false
 }
 
+func (x *NewEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type NewEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1123,6 +1131,7 @@ type NewAutoEnvironmentRequest struct {
 	WorkflowTemplate string            `protobuf:"bytes,1,opt,name=workflowTemplate,proto3" json:"workflowTemplate,omitempty"`
 	Vars             map[string]string `protobuf:"bytes,2,rep,name=vars,proto3" json:"vars,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	Id               string            `protobuf:"bytes,3,opt,name=id,proto3" json:"id,omitempty"`
+	RequestUser      *protos.User      `protobuf:"bytes,4,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *NewAutoEnvironmentRequest) Reset() {
@@ -1178,6 +1187,13 @@ func (x *NewAutoEnvironmentRequest) GetId() string {
 	return ""
 }
 
+func (x *NewAutoEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type NewAutoEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1339,8 +1355,9 @@ type ControlEnvironmentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id   string                           `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	Type ControlEnvironmentRequest_Optype `protobuf:"varint,2,opt,name=type,proto3,enum=o2control.ControlEnvironmentRequest_Optype" json:"type,omitempty"`
+	Id          string                           `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Type        ControlEnvironmentRequest_Optype `protobuf:"varint,2,opt,name=type,proto3,enum=o2control.ControlEnvironmentRequest_Optype" json:"type,omitempty"`
+	RequestUser *protos.User                     `protobuf:"bytes,3,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *ControlEnvironmentRequest) Reset() {
@@ -1389,6 +1406,13 @@ func (x *ControlEnvironmentRequest) GetType() ControlEnvironmentRequest_Optype {
 	return ControlEnvironmentRequest_NOOP
 }
 
+func (x *ControlEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type ControlEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1663,10 +1687,11 @@ type DestroyEnvironmentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                  string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	KeepTasks           bool   `protobuf:"varint,2,opt,name=keepTasks,proto3" json:"keepTasks,omitempty"`
-	AllowInRunningState bool   `protobuf:"varint,3,opt,name=allowInRunningState,proto3" json:"allowInRunningState,omitempty"`
-	Force               bool   `protobuf:"varint,4,opt,name=force,proto3" json:"force,omitempty"`
+	Id                  string       `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	KeepTasks           bool         `protobuf:"varint,2,opt,name=keepTasks,proto3" json:"keepTasks,omitempty"`
+	AllowInRunningState bool         `protobuf:"varint,3,opt,name=allowInRunningState,proto3" json:"allowInRunningState,omitempty"`
+	Force               bool         `protobuf:"varint,4,opt,name=force,proto3" json:"force,omitempty"`
+	RequestUser         *protos.User `protobuf:"bytes,5,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *DestroyEnvironmentRequest) Reset() {
@@ -1729,6 +1754,13 @@ func (x *DestroyEnvironmentRequest) GetForce() bool {
 	return false
 }
 
+func (x *DestroyEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type DestroyEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -4277,7 +4309,7 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
 	0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02,
 	0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x22,
-	0xfc, 0x01, 0x0a, 0x15, 0x4e, 0x65, 0x77, 0x45, 0x6e, 0x76, 0x69, 0x72, 0x6f, 0x6e, 0x6d, 0x65,
+	0xac, 0x02, 0x0a, 0x15, 0x4e, 0x65, 0x77, 0x45, 0x6e, 0x76, 0x69, 0x72, 0x6f, 0x6e, 0x6d, 0x65,
 	0x6e, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x2a, 0x0a, 0x10, 0x77, 0x6f, 0x72,
 	0x6b, 0x66, 0x6c, 0x6f, 0x77, 0x54, 0x65, 0x6d, 0x70, 0x6c, 0x61, 0x74, 0x65, 0x18, 0x01, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x10, 0x77, 0x6f, 0x72, 0x6b, 0x66, 0x6c, 0x6f, 0x77, 0x54, 0x65, 0x6d,
@@ -4289,7 +4321,10 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x03, 0x20, 0x01, 0x28, 0x08, 0x52, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x12, 0x26, 0x0a,
 	0x0e, 0x61, 0x75, 0x74, 0x6f, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x18,
 	0x04, 0x20, 0x01, 0x28, 0x08, 0x52, 0x0e, 0x61, 0x75, 0x74, 0x6f, 0x54, 0x72, 0x61, 0x6e, 0x73,
-	0x69, 0x74, 0x69, 0x6f, 0x6e, 0x1a, 0x37, 0x0a, 0x09, 0x56, 0x61, 0x72, 0x73, 0x45, 0x6e, 0x74,
+	0x69, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x2e, 0x0a, 0x0b, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
+	0x55, 0x73, 0x65, 0x72, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x0c, 0x2e, 0x63, 0x6f, 0x6d,
+	0x6d, 0x6f, 0x6e, 0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x0b, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73,
+	0x74, 0x55, 0x73, 0x65, 0x72, 0x1a, 0x37, 0x0a, 0x09, 0x56, 0x61, 0x72, 0x73, 0x45, 0x6e, 0x74,
 	0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52,
 	0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x18, 0x02, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x05, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x3a, 0x02, 0x38, 0x01, 0x22, 0x6b,
@@ -4299,7 +4334,7 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x6f, 0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x2e, 0x45, 0x6e, 0x76, 0x69, 0x72, 0x6f, 0x6e, 0x6d, 0x65,
 	0x6e, 0x74, 0x49, 0x6e, 0x66, 0x6f, 0x52, 0x0b, 0x65, 0x6e, 0x76, 0x69, 0x72, 0x6f, 0x6e, 0x6d,
 	0x65, 0x6e, 0x74, 0x12, 0x16, 0x0a, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x18, 0x02, 0x20,
-	0x01, 0x28, 0x08, 0x52, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x22, 0xd4, 0x01, 0x0a, 0x19,
+	0x01, 0x28, 0x08, 0x52, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, 0x22, 0x84, 0x02, 0x0a, 0x19,
 	0x4e, 0x65, 0x77, 0x41, 0x75, 0x74, 0x6f, 0x45, 0x6e, 0x76, 0x69, 0x72, 0x6f, 0x6e, 0x6d, 0x65,
 	0x6e, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x2a, 0x0a, 0x10, 0x77, 0x6f, 0x72,
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@@ -4309,7 +4344,10 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x4e, 0x65, 0x77, 0x41, 0x75, 0x74, 0x6f, 0x45, 0x6e, 0x76, 0x69, 0x72, 0x6f, 0x6e, 0x6d, 0x65,
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+	0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x12, 0x2e, 0x0a, 0x0b, 0x72, 0x65, 0x71,
+	0x75, 0x65, 0x73, 0x74, 0x55, 0x73, 0x65, 0x72, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x0c,
+	0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x55, 0x73, 0x65, 0x72, 0x52, 0x0b, 0x72, 0x65,
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 	0x73, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20,
 	0x01, 0x28, 0x09, 0x52, 0x03, 0x6b, 0x65, 0x79, 0x12, 0x14, 0x0a, 0x05, 0x76, 0x61, 0x6c, 0x75,
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@@ -4330,13 +4368,16 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x6f, 0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x2e, 0x52, 0x6f, 0x6c, 0x65, 0x49, 0x6e, 0x66, 0x6f, 0x52,
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+	0x63, 0x22, 0x8b, 0x02, 0x0a, 0x19, 0x43, 0x6f, 0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x45, 0x6e, 0x76,
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@@ -4387,7 +4428,7 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x10, 0x66, 0x61, 0x69, 0x6c, 0x65, 0x64, 0x4f, 0x70, 0x65,
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@@ -4397,7 +4438,10 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x18, 0x03, 0x20, 0x01, 0x28, 0x08, 0x52, 0x13, 0x61, 0x6c, 0x6c, 0x6f, 0x77, 0x49, 0x6e, 0x52,
 	0x75, 0x6e, 0x6e, 0x69, 0x6e, 0x67, 0x53, 0x74, 0x61, 0x74, 0x65, 0x12, 0x14, 0x0a, 0x05, 0x66,
 	0x6f, 0x72, 0x63, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x08, 0x52, 0x05, 0x66, 0x6f, 0x72, 0x63,
-	0x65, 0x22, 0x65, 0x0a, 0x17, 0x44, 0x65, 0x73, 0x74, 0x72, 0x6f, 0x79, 0x45, 0x6e, 0x76, 0x69,
+	0x65, 0x12, 0x2e, 0x0a, 0x0b, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x55, 0x73, 0x65, 0x72,
+	0x18, 0x05, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x0c, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e,
+	0x55, 0x73, 0x65, 0x72, 0x52, 0x0b, 0x72, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x55, 0x73, 0x65,
+	0x72, 0x22, 0x65, 0x0a, 0x17, 0x44, 0x65, 0x73, 0x74, 0x72, 0x6f, 0x79, 0x45, 0x6e, 0x76, 0x69,
 	0x72, 0x6f, 0x6e, 0x6d, 0x65, 0x6e, 0x74, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x12, 0x4a, 0x0a, 0x11,
 	0x63, 0x6c, 0x65, 0x61, 0x6e, 0x75, 0x70, 0x54, 0x61, 0x73, 0x6b, 0x73, 0x52, 0x65, 0x70, 0x6c,
 	0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x6f, 0x32, 0x63, 0x6f, 0x6e, 0x74,
@@ -4981,7 +5025,8 @@ var file_protos_o2control_proto_goTypes = []interface{}{
 	nil,                                     // 77: o2control.RoleInfo.ConsolidatedStackEntry
 	nil,                                     // 78: o2control.WorkflowTemplateInfo.VarSpecMapEntry
 	nil,                                     // 79: o2control.ListIntegratedServicesReply.ServicesEntry
-	(*protos.Event)(nil),                    // 80: events.Event
+	(*protos.User)(nil),                     // 80: common.User
+	(*protos.Event)(nil),                    // 81: events.Event
 }
 var file_protos_o2control_proto_depIdxs = []int32{
 	6,  // 0: o2control.GetFrameworkInfoReply.version:type_name -> o2control.Version
@@ -4992,98 +5037,102 @@ var file_protos_o2control_proto_depIdxs = []int32{
 	67, // 5: o2control.EnvironmentInfo.userVars:type_name -> o2control.EnvironmentInfo.UserVarsEntry
 	68, // 6: o2control.EnvironmentInfo.integratedServicesData:type_name -> o2control.EnvironmentInfo.IntegratedServicesDataEntry
 	69, // 7: o2control.NewEnvironmentRequest.vars:type_name -> o2control.NewEnvironmentRequest.VarsEntry
-	12, // 8: o2control.NewEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
-	70, // 9: o2control.NewAutoEnvironmentRequest.vars:type_name -> o2control.NewAutoEnvironmentRequest.VarsEntry
-	12, // 10: o2control.GetEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
-	44, // 11: o2control.GetEnvironmentReply.workflow:type_name -> o2control.RoleInfo
-	0,  // 12: o2control.ControlEnvironmentRequest.type:type_name -> o2control.ControlEnvironmentRequest.Optype
-	22, // 13: o2control.ModifyEnvironmentRequest.operations:type_name -> o2control.EnvironmentOperation
-	1,  // 14: o2control.EnvironmentOperation.type:type_name -> o2control.EnvironmentOperation.Optype
-	22, // 15: o2control.ModifyEnvironmentReply.failedOperations:type_name -> o2control.EnvironmentOperation
-	42, // 16: o2control.DestroyEnvironmentReply.cleanupTasksReply:type_name -> o2control.CleanupTasksReply
-	71, // 17: o2control.SetEnvironmentPropertiesRequest.properties:type_name -> o2control.SetEnvironmentPropertiesRequest.PropertiesEntry
-	72, // 18: o2control.GetEnvironmentPropertiesReply.properties:type_name -> o2control.GetEnvironmentPropertiesReply.PropertiesEntry
-	33, // 19: o2control.ShortTaskInfo.deploymentInfo:type_name -> o2control.TaskDeploymentInfo
-	32, // 20: o2control.GetTasksReply.tasks:type_name -> o2control.ShortTaskInfo
-	40, // 21: o2control.GetTaskReply.task:type_name -> o2control.TaskInfo
-	32, // 22: o2control.TaskInfo.shortInfo:type_name -> o2control.ShortTaskInfo
-	39, // 23: o2control.TaskInfo.inboundChannels:type_name -> o2control.ChannelInfo
-	39, // 24: o2control.TaskInfo.outboundChannels:type_name -> o2control.ChannelInfo
-	38, // 25: o2control.TaskInfo.commandInfo:type_name -> o2control.CommandInfo
-	73, // 26: o2control.TaskInfo.properties:type_name -> o2control.TaskInfo.PropertiesEntry
-	32, // 27: o2control.CleanupTasksReply.killedTasks:type_name -> o2control.ShortTaskInfo
-	32, // 28: o2control.CleanupTasksReply.runningTasks:type_name -> o2control.ShortTaskInfo
-	44, // 29: o2control.RoleInfo.roles:type_name -> o2control.RoleInfo
-	74, // 30: o2control.RoleInfo.defaults:type_name -> o2control.RoleInfo.DefaultsEntry
-	75, // 31: o2control.RoleInfo.vars:type_name -> o2control.RoleInfo.VarsEntry
-	76, // 32: o2control.RoleInfo.userVars:type_name -> o2control.RoleInfo.UserVarsEntry
-	77, // 33: o2control.RoleInfo.consolidatedStack:type_name -> o2control.RoleInfo.ConsolidatedStackEntry
-	44, // 34: o2control.GetRolesReply.roles:type_name -> o2control.RoleInfo
-	3,  // 35: o2control.VarSpecMessage.type:type_name -> o2control.VarSpecMessage.Type
-	2,  // 36: o2control.VarSpecMessage.widget:type_name -> o2control.VarSpecMessage.UiWidget
-	78, // 37: o2control.WorkflowTemplateInfo.varSpecMap:type_name -> o2control.WorkflowTemplateInfo.VarSpecMapEntry
-	48, // 38: o2control.GetWorkflowTemplatesReply.workflowTemplates:type_name -> o2control.WorkflowTemplateInfo
-	51, // 39: o2control.ListReposReply.repos:type_name -> o2control.RepoInfo
-	79, // 40: o2control.ListIntegratedServicesReply.services:type_name -> o2control.ListIntegratedServicesReply.ServicesEntry
-	47, // 41: o2control.WorkflowTemplateInfo.VarSpecMapEntry.value:type_name -> o2control.VarSpecMessage
-	64, // 42: o2control.ListIntegratedServicesReply.ServicesEntry.value:type_name -> o2control.IntegratedServiceInfo
-	5,  // 43: o2control.Control.GetFrameworkInfo:input_type -> o2control.GetFrameworkInfoRequest
-	10, // 44: o2control.Control.GetEnvironments:input_type -> o2control.GetEnvironmentsRequest
-	15, // 45: o2control.Control.NewAutoEnvironment:input_type -> o2control.NewAutoEnvironmentRequest
-	13, // 46: o2control.Control.NewEnvironment:input_type -> o2control.NewEnvironmentRequest
-	17, // 47: o2control.Control.GetEnvironment:input_type -> o2control.GetEnvironmentRequest
-	19, // 48: o2control.Control.ControlEnvironment:input_type -> o2control.ControlEnvironmentRequest
-	24, // 49: o2control.Control.DestroyEnvironment:input_type -> o2control.DestroyEnvironmentRequest
-	62, // 50: o2control.Control.GetActiveDetectors:input_type -> o2control.Empty
-	62, // 51: o2control.Control.GetAvailableDetectors:input_type -> o2control.Empty
-	13, // 52: o2control.Control.NewEnvironmentAsync:input_type -> o2control.NewEnvironmentRequest
-	34, // 53: o2control.Control.GetTasks:input_type -> o2control.GetTasksRequest
-	36, // 54: o2control.Control.GetTask:input_type -> o2control.GetTaskRequest
-	41, // 55: o2control.Control.CleanupTasks:input_type -> o2control.CleanupTasksRequest
-	43, // 56: o2control.Control.GetRoles:input_type -> o2control.GetRolesRequest
-	46, // 57: o2control.Control.GetWorkflowTemplates:input_type -> o2control.GetWorkflowTemplatesRequest
-	50, // 58: o2control.Control.ListRepos:input_type -> o2control.ListReposRequest
-	53, // 59: o2control.Control.AddRepo:input_type -> o2control.AddRepoRequest
-	55, // 60: o2control.Control.RemoveRepo:input_type -> o2control.RemoveRepoRequest
-	57, // 61: o2control.Control.RefreshRepos:input_type -> o2control.RefreshReposRequest
-	58, // 62: o2control.Control.SetDefaultRepo:input_type -> o2control.SetDefaultRepoRequest
-	59, // 63: o2control.Control.SetGlobalDefaultRevision:input_type -> o2control.SetGlobalDefaultRevisionRequest
-	60, // 64: o2control.Control.SetRepoDefaultRevision:input_type -> o2control.SetRepoDefaultRevisionRequest
-	4,  // 65: o2control.Control.Subscribe:input_type -> o2control.SubscribeRequest
-	62, // 66: o2control.Control.GetIntegratedServices:input_type -> o2control.Empty
-	8,  // 67: o2control.Control.Teardown:input_type -> o2control.TeardownRequest
-	21, // 68: o2control.Control.ModifyEnvironment:input_type -> o2control.ModifyEnvironmentRequest
-	7,  // 69: o2control.Control.GetFrameworkInfo:output_type -> o2control.GetFrameworkInfoReply
-	11, // 70: o2control.Control.GetEnvironments:output_type -> o2control.GetEnvironmentsReply
-	16, // 71: o2control.Control.NewAutoEnvironment:output_type -> o2control.NewAutoEnvironmentReply
-	14, // 72: o2control.Control.NewEnvironment:output_type -> o2control.NewEnvironmentReply
-	18, // 73: o2control.Control.GetEnvironment:output_type -> o2control.GetEnvironmentReply
-	20, // 74: o2control.Control.ControlEnvironment:output_type -> o2control.ControlEnvironmentReply
-	25, // 75: o2control.Control.DestroyEnvironment:output_type -> o2control.DestroyEnvironmentReply
-	26, // 76: o2control.Control.GetActiveDetectors:output_type -> o2control.GetActiveDetectorsReply
-	27, // 77: o2control.Control.GetAvailableDetectors:output_type -> o2control.GetAvailableDetectorsReply
-	14, // 78: o2control.Control.NewEnvironmentAsync:output_type -> o2control.NewEnvironmentReply
-	35, // 79: o2control.Control.GetTasks:output_type -> o2control.GetTasksReply
-	37, // 80: o2control.Control.GetTask:output_type -> o2control.GetTaskReply
-	42, // 81: o2control.Control.CleanupTasks:output_type -> o2control.CleanupTasksReply
-	45, // 82: o2control.Control.GetRoles:output_type -> o2control.GetRolesReply
-	49, // 83: o2control.Control.GetWorkflowTemplates:output_type -> o2control.GetWorkflowTemplatesReply
-	52, // 84: o2control.Control.ListRepos:output_type -> o2control.ListReposReply
-	54, // 85: o2control.Control.AddRepo:output_type -> o2control.AddRepoReply
-	56, // 86: o2control.Control.RemoveRepo:output_type -> o2control.RemoveRepoReply
-	62, // 87: o2control.Control.RefreshRepos:output_type -> o2control.Empty
-	62, // 88: o2control.Control.SetDefaultRepo:output_type -> o2control.Empty
-	62, // 89: o2control.Control.SetGlobalDefaultRevision:output_type -> o2control.Empty
-	61, // 90: o2control.Control.SetRepoDefaultRevision:output_type -> o2control.SetRepoDefaultRevisionReply
-	80, // 91: o2control.Control.Subscribe:output_type -> events.Event
-	63, // 92: o2control.Control.GetIntegratedServices:output_type -> o2control.ListIntegratedServicesReply
-	9,  // 93: o2control.Control.Teardown:output_type -> o2control.TeardownReply
-	23, // 94: o2control.Control.ModifyEnvironment:output_type -> o2control.ModifyEnvironmentReply
-	69, // [69:95] is the sub-list for method output_type
-	43, // [43:69] is the sub-list for method input_type
-	43, // [43:43] is the sub-list for extension type_name
-	43, // [43:43] is the sub-list for extension extendee
-	0,  // [0:43] is the sub-list for field type_name
+	80, // 8: o2control.NewEnvironmentRequest.requestUser:type_name -> common.User
+	12, // 9: o2control.NewEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
+	70, // 10: o2control.NewAutoEnvironmentRequest.vars:type_name -> o2control.NewAutoEnvironmentRequest.VarsEntry
+	80, // 11: o2control.NewAutoEnvironmentRequest.requestUser:type_name -> common.User
+	12, // 12: o2control.GetEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
+	44, // 13: o2control.GetEnvironmentReply.workflow:type_name -> o2control.RoleInfo
+	0,  // 14: o2control.ControlEnvironmentRequest.type:type_name -> o2control.ControlEnvironmentRequest.Optype
+	80, // 15: o2control.ControlEnvironmentRequest.requestUser:type_name -> common.User
+	22, // 16: o2control.ModifyEnvironmentRequest.operations:type_name -> o2control.EnvironmentOperation
+	1,  // 17: o2control.EnvironmentOperation.type:type_name -> o2control.EnvironmentOperation.Optype
+	22, // 18: o2control.ModifyEnvironmentReply.failedOperations:type_name -> o2control.EnvironmentOperation
+	80, // 19: o2control.DestroyEnvironmentRequest.requestUser:type_name -> common.User
+	42, // 20: o2control.DestroyEnvironmentReply.cleanupTasksReply:type_name -> o2control.CleanupTasksReply
+	71, // 21: o2control.SetEnvironmentPropertiesRequest.properties:type_name -> o2control.SetEnvironmentPropertiesRequest.PropertiesEntry
+	72, // 22: o2control.GetEnvironmentPropertiesReply.properties:type_name -> o2control.GetEnvironmentPropertiesReply.PropertiesEntry
+	33, // 23: o2control.ShortTaskInfo.deploymentInfo:type_name -> o2control.TaskDeploymentInfo
+	32, // 24: o2control.GetTasksReply.tasks:type_name -> o2control.ShortTaskInfo
+	40, // 25: o2control.GetTaskReply.task:type_name -> o2control.TaskInfo
+	32, // 26: o2control.TaskInfo.shortInfo:type_name -> o2control.ShortTaskInfo
+	39, // 27: o2control.TaskInfo.inboundChannels:type_name -> o2control.ChannelInfo
+	39, // 28: o2control.TaskInfo.outboundChannels:type_name -> o2control.ChannelInfo
+	38, // 29: o2control.TaskInfo.commandInfo:type_name -> o2control.CommandInfo
+	73, // 30: o2control.TaskInfo.properties:type_name -> o2control.TaskInfo.PropertiesEntry
+	32, // 31: o2control.CleanupTasksReply.killedTasks:type_name -> o2control.ShortTaskInfo
+	32, // 32: o2control.CleanupTasksReply.runningTasks:type_name -> o2control.ShortTaskInfo
+	44, // 33: o2control.RoleInfo.roles:type_name -> o2control.RoleInfo
+	74, // 34: o2control.RoleInfo.defaults:type_name -> o2control.RoleInfo.DefaultsEntry
+	75, // 35: o2control.RoleInfo.vars:type_name -> o2control.RoleInfo.VarsEntry
+	76, // 36: o2control.RoleInfo.userVars:type_name -> o2control.RoleInfo.UserVarsEntry
+	77, // 37: o2control.RoleInfo.consolidatedStack:type_name -> o2control.RoleInfo.ConsolidatedStackEntry
+	44, // 38: o2control.GetRolesReply.roles:type_name -> o2control.RoleInfo
+	3,  // 39: o2control.VarSpecMessage.type:type_name -> o2control.VarSpecMessage.Type
+	2,  // 40: o2control.VarSpecMessage.widget:type_name -> o2control.VarSpecMessage.UiWidget
+	78, // 41: o2control.WorkflowTemplateInfo.varSpecMap:type_name -> o2control.WorkflowTemplateInfo.VarSpecMapEntry
+	48, // 42: o2control.GetWorkflowTemplatesReply.workflowTemplates:type_name -> o2control.WorkflowTemplateInfo
+	51, // 43: o2control.ListReposReply.repos:type_name -> o2control.RepoInfo
+	79, // 44: o2control.ListIntegratedServicesReply.services:type_name -> o2control.ListIntegratedServicesReply.ServicesEntry
+	47, // 45: o2control.WorkflowTemplateInfo.VarSpecMapEntry.value:type_name -> o2control.VarSpecMessage
+	64, // 46: o2control.ListIntegratedServicesReply.ServicesEntry.value:type_name -> o2control.IntegratedServiceInfo
+	5,  // 47: o2control.Control.GetFrameworkInfo:input_type -> o2control.GetFrameworkInfoRequest
+	10, // 48: o2control.Control.GetEnvironments:input_type -> o2control.GetEnvironmentsRequest
+	15, // 49: o2control.Control.NewAutoEnvironment:input_type -> o2control.NewAutoEnvironmentRequest
+	13, // 50: o2control.Control.NewEnvironment:input_type -> o2control.NewEnvironmentRequest
+	17, // 51: o2control.Control.GetEnvironment:input_type -> o2control.GetEnvironmentRequest
+	19, // 52: o2control.Control.ControlEnvironment:input_type -> o2control.ControlEnvironmentRequest
+	24, // 53: o2control.Control.DestroyEnvironment:input_type -> o2control.DestroyEnvironmentRequest
+	62, // 54: o2control.Control.GetActiveDetectors:input_type -> o2control.Empty
+	62, // 55: o2control.Control.GetAvailableDetectors:input_type -> o2control.Empty
+	13, // 56: o2control.Control.NewEnvironmentAsync:input_type -> o2control.NewEnvironmentRequest
+	34, // 57: o2control.Control.GetTasks:input_type -> o2control.GetTasksRequest
+	36, // 58: o2control.Control.GetTask:input_type -> o2control.GetTaskRequest
+	41, // 59: o2control.Control.CleanupTasks:input_type -> o2control.CleanupTasksRequest
+	43, // 60: o2control.Control.GetRoles:input_type -> o2control.GetRolesRequest
+	46, // 61: o2control.Control.GetWorkflowTemplates:input_type -> o2control.GetWorkflowTemplatesRequest
+	50, // 62: o2control.Control.ListRepos:input_type -> o2control.ListReposRequest
+	53, // 63: o2control.Control.AddRepo:input_type -> o2control.AddRepoRequest
+	55, // 64: o2control.Control.RemoveRepo:input_type -> o2control.RemoveRepoRequest
+	57, // 65: o2control.Control.RefreshRepos:input_type -> o2control.RefreshReposRequest
+	58, // 66: o2control.Control.SetDefaultRepo:input_type -> o2control.SetDefaultRepoRequest
+	59, // 67: o2control.Control.SetGlobalDefaultRevision:input_type -> o2control.SetGlobalDefaultRevisionRequest
+	60, // 68: o2control.Control.SetRepoDefaultRevision:input_type -> o2control.SetRepoDefaultRevisionRequest
+	4,  // 69: o2control.Control.Subscribe:input_type -> o2control.SubscribeRequest
+	62, // 70: o2control.Control.GetIntegratedServices:input_type -> o2control.Empty
+	8,  // 71: o2control.Control.Teardown:input_type -> o2control.TeardownRequest
+	21, // 72: o2control.Control.ModifyEnvironment:input_type -> o2control.ModifyEnvironmentRequest
+	7,  // 73: o2control.Control.GetFrameworkInfo:output_type -> o2control.GetFrameworkInfoReply
+	11, // 74: o2control.Control.GetEnvironments:output_type -> o2control.GetEnvironmentsReply
+	16, // 75: o2control.Control.NewAutoEnvironment:output_type -> o2control.NewAutoEnvironmentReply
+	14, // 76: o2control.Control.NewEnvironment:output_type -> o2control.NewEnvironmentReply
+	18, // 77: o2control.Control.GetEnvironment:output_type -> o2control.GetEnvironmentReply
+	20, // 78: o2control.Control.ControlEnvironment:output_type -> o2control.ControlEnvironmentReply
+	25, // 79: o2control.Control.DestroyEnvironment:output_type -> o2control.DestroyEnvironmentReply
+	26, // 80: o2control.Control.GetActiveDetectors:output_type -> o2control.GetActiveDetectorsReply
+	27, // 81: o2control.Control.GetAvailableDetectors:output_type -> o2control.GetAvailableDetectorsReply
+	14, // 82: o2control.Control.NewEnvironmentAsync:output_type -> o2control.NewEnvironmentReply
+	35, // 83: o2control.Control.GetTasks:output_type -> o2control.GetTasksReply
+	37, // 84: o2control.Control.GetTask:output_type -> o2control.GetTaskReply
+	42, // 85: o2control.Control.CleanupTasks:output_type -> o2control.CleanupTasksReply
+	45, // 86: o2control.Control.GetRoles:output_type -> o2control.GetRolesReply
+	49, // 87: o2control.Control.GetWorkflowTemplates:output_type -> o2control.GetWorkflowTemplatesReply
+	52, // 88: o2control.Control.ListRepos:output_type -> o2control.ListReposReply
+	54, // 89: o2control.Control.AddRepo:output_type -> o2control.AddRepoReply
+	56, // 90: o2control.Control.RemoveRepo:output_type -> o2control.RemoveRepoReply
+	62, // 91: o2control.Control.RefreshRepos:output_type -> o2control.Empty
+	62, // 92: o2control.Control.SetDefaultRepo:output_type -> o2control.Empty
+	62, // 93: o2control.Control.SetGlobalDefaultRevision:output_type -> o2control.Empty
+	61, // 94: o2control.Control.SetRepoDefaultRevision:output_type -> o2control.SetRepoDefaultRevisionReply
+	81, // 95: o2control.Control.Subscribe:output_type -> events.Event
+	63, // 96: o2control.Control.GetIntegratedServices:output_type -> o2control.ListIntegratedServicesReply
+	9,  // 97: o2control.Control.Teardown:output_type -> o2control.TeardownReply
+	23, // 98: o2control.Control.ModifyEnvironment:output_type -> o2control.ModifyEnvironmentReply
+	73, // [73:99] is the sub-list for method output_type
+	47, // [47:73] is the sub-list for method input_type
+	47, // [47:47] is the sub-list for extension type_name
+	47, // [47:47] is the sub-list for extension extendee
+	0,  // [0:47] is the sub-list for field type_name
 }
 
 func init() { file_protos_o2control_proto_init() }
diff --git a/common/doc.go b/common/doc.go
index d1d6f80b..1e46b632 100644
--- a/common/doc.go
+++ b/common/doc.go
@@ -27,3 +27,4 @@
 package common
 
 //go:generate protoc -I=./ --go_out=. --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative --go-grpc_out=require_unimplemented_servers=false:. protos/events.proto
+//go:generate protoc -I=./ --go_out=. --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative --go-grpc_out=require_unimplemented_servers=false:. protos/common.proto
diff --git a/common/protos/common.pb.go b/common/protos/common.pb.go
new file mode 100644
index 00000000..eccc0da7
--- /dev/null
+++ b/common/protos/common.pb.go
@@ -0,0 +1,193 @@
+//
+// === This file is part of ALICE O² ===
+//
+// Copyright 2024 CERN and copyright holders of ALICE O².
+// Author: Teo Mrnjavac <teo.mrnjavac@cern.ch>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// In applying this license CERN does not waive the privileges and
+// immunities granted to it by virtue of its status as an
+// Intergovernmental Organization or submit itself to any jurisdiction.
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.31.0
+// 	protoc        v4.25.3
+// source: protos/common.proto
+
+package pb
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type User struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The unique CERN identifier of this user.
+	ExternalId int32 `protobuf:"varint,1,opt,name=externalId,proto3" json:"externalId,omitempty"`
+	// The unique identifier of this entity.
+	Id *int32 `protobuf:"varint,2,opt,name=id,proto3,oneof" json:"id,omitempty"`
+	// Name of the user.
+	Name string `protobuf:"bytes,3,opt,name=name,proto3" json:"name,omitempty"`
+}
+
+func (x *User) Reset() {
+	*x = User{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_protos_common_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *User) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*User) ProtoMessage() {}
+
+func (x *User) ProtoReflect() protoreflect.Message {
+	mi := &file_protos_common_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use User.ProtoReflect.Descriptor instead.
+func (*User) Descriptor() ([]byte, []int) {
+	return file_protos_common_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *User) GetExternalId() int32 {
+	if x != nil {
+		return x.ExternalId
+	}
+	return 0
+}
+
+func (x *User) GetId() int32 {
+	if x != nil && x.Id != nil {
+		return *x.Id
+	}
+	return 0
+}
+
+func (x *User) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+var File_protos_common_proto protoreflect.FileDescriptor
+
+var file_protos_common_proto_rawDesc = []byte{
+	0x0a, 0x13, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x06, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x22, 0x56, 0x0a,
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+	0x2e, 0x61, 0x6c, 0x69, 0x63, 0x65, 0x2e, 0x6f, 0x32, 0x2e, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x6f,
+	0x6c, 0x2e, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x5a, 0x30, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62,
+	0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x41, 0x6c, 0x69, 0x63, 0x65, 0x4f, 0x32, 0x47, 0x72, 0x6f, 0x75,
+	0x70, 0x2f, 0x43, 0x6f, 0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e,
+	0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x3b, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
+}
+
+var (
+	file_protos_common_proto_rawDescOnce sync.Once
+	file_protos_common_proto_rawDescData = file_protos_common_proto_rawDesc
+)
+
+func file_protos_common_proto_rawDescGZIP() []byte {
+	file_protos_common_proto_rawDescOnce.Do(func() {
+		file_protos_common_proto_rawDescData = protoimpl.X.CompressGZIP(file_protos_common_proto_rawDescData)
+	})
+	return file_protos_common_proto_rawDescData
+}
+
+var file_protos_common_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_protos_common_proto_goTypes = []interface{}{
+	(*User)(nil), // 0: common.User
+}
+var file_protos_common_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_protos_common_proto_init() }
+func file_protos_common_proto_init() {
+	if File_protos_common_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_protos_common_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*User); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_protos_common_proto_msgTypes[0].OneofWrappers = []interface{}{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_protos_common_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_protos_common_proto_goTypes,
+		DependencyIndexes: file_protos_common_proto_depIdxs,
+		MessageInfos:      file_protos_common_proto_msgTypes,
+	}.Build()
+	File_protos_common_proto = out.File
+	file_protos_common_proto_rawDesc = nil
+	file_protos_common_proto_goTypes = nil
+	file_protos_common_proto_depIdxs = nil
+}
diff --git a/common/protos/common.proto b/common/protos/common.proto
new file mode 100644
index 00000000..45e2fd99
--- /dev/null
+++ b/common/protos/common.proto
@@ -0,0 +1,41 @@
+/*
+ * === This file is part of ALICE O² ===
+ *
+ * Copyright 2024 CERN and copyright holders of ALICE O².
+ * Author: Teo Mrnjavac <teo.mrnjavac@cern.ch>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * In applying this license CERN does not waive the privileges and
+ * immunities granted to it by virtue of its status as an
+ * Intergovernmental Organization or submit itself to any jurisdiction.
+ */
+
+
+syntax = "proto3";
+
+package common;
+option java_package = "ch.cern.alice.o2.control.common";
+option go_package = "github.com/AliceO2Group/Control/common/protos;pb";
+
+//////////////// Common types ///////////////
+
+message User {
+  // The unique CERN identifier of this user.
+  int32 externalId = 1;
+  // The unique identifier of this entity.
+  optional int32 id = 2;
+  // Name of the user.
+  string name = 3;
+}
diff --git a/common/protos/events.pb.go b/common/protos/events.pb.go
index 0e416d0c..2d7f2eb2 100644
--- a/common/protos/events.pb.go
+++ b/common/protos/events.pb.go
@@ -255,6 +255,7 @@ type Ev_EnvironmentEvent struct {
 	TransitionStep   string            `protobuf:"bytes,7,opt,name=transitionStep,proto3" json:"transitionStep,omitempty"`
 	TransitionStatus OpStatus          `protobuf:"varint,8,opt,name=transitionStatus,proto3,enum=events.OpStatus" json:"transitionStatus,omitempty"`
 	Vars             map[string]string `protobuf:"bytes,9,rep,name=vars,proto3" json:"vars,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` // consolidated environment variables at the root role of the environment
+	LastRequestUser  *User             `protobuf:"bytes,10,opt,name=lastRequestUser,proto3" json:"lastRequestUser,omitempty"`
 }
 
 func (x *Ev_EnvironmentEvent) Reset() {
@@ -352,6 +353,13 @@ func (x *Ev_EnvironmentEvent) GetVars() map[string]string {
 	return nil
 }
 
+func (x *Ev_EnvironmentEvent) GetLastRequestUser() *User {
+	if x != nil {
+		return x.LastRequestUser
+	}
+	return nil
+}
+
 type Traits struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -831,6 +839,7 @@ type Ev_RunEvent struct {
 	Transition       string            `protobuf:"bytes,5,opt,name=transition,proto3" json:"transition,omitempty"`
 	TransitionStatus OpStatus          `protobuf:"varint,6,opt,name=transitionStatus,proto3,enum=events.OpStatus" json:"transitionStatus,omitempty"`
 	Vars             map[string]string `protobuf:"bytes,7,rep,name=vars,proto3" json:"vars,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	LastRequestUser  *User             `protobuf:"bytes,8,opt,name=lastRequestUser,proto3" json:"lastRequestUser,omitempty"`
 }
 
 func (x *Ev_RunEvent) Reset() {
@@ -914,6 +923,13 @@ func (x *Ev_RunEvent) GetVars() map[string]string {
 	return nil
 }
 
+func (x *Ev_RunEvent) GetLastRequestUser() *User {
+	if x != nil {
+		return x.LastRequestUser
+	}
+	return nil
+}
+
 type Event struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1105,190 +1121,198 @@ var File_protos_events_proto protoreflect.FileDescriptor
 
 var file_protos_events_proto_rawDesc = []byte{
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+	0x00, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1320,31 +1344,34 @@ var file_protos_events_proto_goTypes = []interface{}{
 	(*Event)(nil),                       // 11: events.Event
 	nil,                                 // 12: events.Ev_EnvironmentEvent.VarsEntry
 	nil,                                 // 13: events.Ev_RunEvent.VarsEntry
+	(*User)(nil),                        // 14: common.User
 }
 var file_protos_events_proto_depIdxs = []int32{
 	0,  // 0: events.Ev_EnvironmentEvent.transitionStatus:type_name -> events.OpStatus
 	12, // 1: events.Ev_EnvironmentEvent.vars:type_name -> events.Ev_EnvironmentEvent.VarsEntry
-	5,  // 2: events.Ev_TaskEvent.traits:type_name -> events.Traits
-	0,  // 3: events.Ev_CallEvent.callStatus:type_name -> events.OpStatus
-	5,  // 4: events.Ev_CallEvent.traits:type_name -> events.Traits
-	0,  // 5: events.Ev_IntegratedServiceEvent.operationStatus:type_name -> events.OpStatus
-	0,  // 6: events.Ev_IntegratedServiceEvent.operationStepStatus:type_name -> events.OpStatus
-	0,  // 7: events.Ev_RunEvent.transitionStatus:type_name -> events.OpStatus
-	13, // 8: events.Ev_RunEvent.vars:type_name -> events.Ev_RunEvent.VarsEntry
-	4,  // 9: events.Event.environmentEvent:type_name -> events.Ev_EnvironmentEvent
-	6,  // 10: events.Event.taskEvent:type_name -> events.Ev_TaskEvent
-	8,  // 11: events.Event.roleEvent:type_name -> events.Ev_RoleEvent
-	7,  // 12: events.Event.callEvent:type_name -> events.Ev_CallEvent
-	9,  // 13: events.Event.integratedServiceEvent:type_name -> events.Ev_IntegratedServiceEvent
-	10, // 14: events.Event.runEvent:type_name -> events.Ev_RunEvent
-	3,  // 15: events.Event.frameworkEvent:type_name -> events.Ev_MetaEvent_FrameworkEvent
-	1,  // 16: events.Event.mesosHeartbeatEvent:type_name -> events.Ev_MetaEvent_MesosHeartbeat
-	2,  // 17: events.Event.coreStartEvent:type_name -> events.Ev_MetaEvent_CoreStart
-	18, // [18:18] is the sub-list for method output_type
-	18, // [18:18] is the sub-list for method input_type
-	18, // [18:18] is the sub-list for extension type_name
-	18, // [18:18] is the sub-list for extension extendee
-	0,  // [0:18] is the sub-list for field type_name
+	14, // 2: events.Ev_EnvironmentEvent.lastRequestUser:type_name -> common.User
+	5,  // 3: events.Ev_TaskEvent.traits:type_name -> events.Traits
+	0,  // 4: events.Ev_CallEvent.callStatus:type_name -> events.OpStatus
+	5,  // 5: events.Ev_CallEvent.traits:type_name -> events.Traits
+	0,  // 6: events.Ev_IntegratedServiceEvent.operationStatus:type_name -> events.OpStatus
+	0,  // 7: events.Ev_IntegratedServiceEvent.operationStepStatus:type_name -> events.OpStatus
+	0,  // 8: events.Ev_RunEvent.transitionStatus:type_name -> events.OpStatus
+	13, // 9: events.Ev_RunEvent.vars:type_name -> events.Ev_RunEvent.VarsEntry
+	14, // 10: events.Ev_RunEvent.lastRequestUser:type_name -> common.User
+	4,  // 11: events.Event.environmentEvent:type_name -> events.Ev_EnvironmentEvent
+	6,  // 12: events.Event.taskEvent:type_name -> events.Ev_TaskEvent
+	8,  // 13: events.Event.roleEvent:type_name -> events.Ev_RoleEvent
+	7,  // 14: events.Event.callEvent:type_name -> events.Ev_CallEvent
+	9,  // 15: events.Event.integratedServiceEvent:type_name -> events.Ev_IntegratedServiceEvent
+	10, // 16: events.Event.runEvent:type_name -> events.Ev_RunEvent
+	3,  // 17: events.Event.frameworkEvent:type_name -> events.Ev_MetaEvent_FrameworkEvent
+	1,  // 18: events.Event.mesosHeartbeatEvent:type_name -> events.Ev_MetaEvent_MesosHeartbeat
+	2,  // 19: events.Event.coreStartEvent:type_name -> events.Ev_MetaEvent_CoreStart
+	20, // [20:20] is the sub-list for method output_type
+	20, // [20:20] is the sub-list for method input_type
+	20, // [20:20] is the sub-list for extension type_name
+	20, // [20:20] is the sub-list for extension extendee
+	0,  // [0:20] is the sub-list for field type_name
 }
 
 func init() { file_protos_events_proto_init() }
@@ -1352,6 +1379,7 @@ func file_protos_events_proto_init() {
 	if File_protos_events_proto != nil {
 		return
 	}
+	file_protos_common_proto_init()
 	if !protoimpl.UnsafeEnabled {
 		file_protos_events_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Ev_MetaEvent_MesosHeartbeat); i {
diff --git a/common/protos/events.proto b/common/protos/events.proto
index 38270e8b..478d8b6e 100644
--- a/common/protos/events.proto
+++ b/common/protos/events.proto
@@ -28,6 +28,8 @@ package events;
 option java_package = "ch.cern.alice.o2.control.events";
 option go_package = "github.com/AliceO2Group/Control/common/protos;pb";
 
+import public "protos/common.proto";
+
 //////////////// Common event messages ///////////////
 
 enum OpStatus {
@@ -61,6 +63,7 @@ message Ev_EnvironmentEvent {
   string transitionStep = 7;
   OpStatus transitionStatus = 8;
   map<string, string> vars = 9; // consolidated environment variables at the root role of the environment
+  common.User lastRequestUser = 10;
 }
 
 message Traits {
@@ -120,6 +123,7 @@ message Ev_RunEvent {
   string transition = 5;
   OpStatus transitionStatus = 6;
   map<string, string> vars = 7;
+  common.User lastRequestUser = 8;
 }
 
 message Event {
diff --git a/core/environment/environment.go b/core/environment/environment.go
index 4c186dfe..3f815893 100644
--- a/core/environment/environment.go
+++ b/core/environment/environment.go
@@ -28,6 +28,7 @@ package environment
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"sort"
@@ -164,12 +165,13 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				trigger := fmt.Sprintf("before_%s", e.Event)
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.GetCurrentRunNumber(),
-					Transition:     e.Event,
-					TransitionStep: trigger,
-					Message:        "transition step starting",
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.GetCurrentRunNumber(),
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					Message:         "transition step starting",
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				// If the event is START_ACTIVITY, we set up and update variables relevant to plugins early on.
@@ -202,6 +204,7 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 						Transition:       e.Event,
 						TransitionStatus: pb.OpStatus_STARTED,
 						Vars:             nil,
+						LastRequestUser:  env.GetLastRequestUser(),
 					}, runStartTime)
 
 					cleanupCount := 0
@@ -242,6 +245,7 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 							Transition:       e.Event,
 							TransitionStatus: pb.OpStatus_STARTED,
 							Vars:             nil,
+							LastRequestUser:  env.GetLastRequestUser(),
 						}, runEndTime)
 
 					} else {
@@ -263,6 +267,7 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 							Transition:       e.Event,
 							TransitionStatus: pb.OpStatus_STARTED,
 							Vars:             nil,
+							LastRequestUser:  env.GetLastRequestUser(),
 						}, runEndTime)
 
 					} else {
@@ -295,25 +300,27 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				}
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Error:          errorMsg,
-					Message:        "transition step finished",
-					Transition:     e.Event,
-					TransitionStep: trigger,
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Error:           errorMsg,
+					Message:         "transition step finished",
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 			},
 			"leave_state": func(_ context.Context, e *fsm.Event) {
 				trigger := fmt.Sprintf("leave_%s", e.Src)
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Transition:     e.Event,
-					TransitionStep: trigger,
-					Message:        "transition step starting",
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					Message:         "transition step starting",
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				// We might leave RUNNING not only through STOP_ACTIVITY. In such cases we also need a run stop time.
@@ -338,13 +345,14 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				}
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Error:          errorMsg,
-					Message:        "transition step finished",
-					Transition:     e.Event,
-					TransitionStep: trigger,
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Error:           errorMsg,
+					Message:         "transition step finished",
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				if e.Err != nil {
@@ -352,12 +360,13 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				}
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Message:        "transition step starting",
-					Transition:     e.Event,
-					TransitionStep: fmt.Sprintf("tasks_%s", e.Event),
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Message:         "transition step starting",
+					Transition:      e.Event,
+					TransitionStep:  fmt.Sprintf("tasks_%s", e.Event),
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				env.handlerFunc()(e)
@@ -367,13 +376,14 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				}
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          e.Dst, // exceptionally we take the destination state here instead of the current, because the tasks have transitioned
-					RunNumber:      env.currentRunNumber,
-					Error:          errorMsg,
-					Message:        "transition step finished",
-					Transition:     e.Event,
-					TransitionStep: fmt.Sprintf("tasks_%s", e.Event),
+					EnvironmentId:   env.id.String(),
+					State:           e.Dst, // exceptionally we take the destination state here instead of the current, because the tasks have transitioned
+					RunNumber:       env.currentRunNumber,
+					Error:           errorMsg,
+					Message:         "transition step finished",
+					Transition:      e.Event,
+					TransitionStep:  fmt.Sprintf("tasks_%s", e.Event),
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 			},
@@ -381,12 +391,13 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				trigger := fmt.Sprintf("enter_%s", e.Dst)
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Transition:     e.Event,
-					TransitionStep: trigger,
-					Message:        "transition step starting",
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					Message:         "transition step starting",
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				enterStateTimeMs = strconv.FormatInt(time.Now().UnixMilli(), 10)
@@ -403,13 +414,14 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				}
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Error:          errorMsg,
-					Message:        "transition step finished",
-					Transition:     e.Event,
-					TransitionStep: trigger,
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Error:           errorMsg,
+					Message:         "transition step finished",
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				if e.Err != nil {
@@ -433,12 +445,13 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				trigger := fmt.Sprintf("after_%s", e.Event)
 
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Transition:     e.Event,
-					TransitionStep: trigger,
-					Message:        "transition step starting",
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					Message:         "transition step starting",
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 
 				errHooks := env.handleHooks(env.Workflow(), trigger)
@@ -489,6 +502,7 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 						Transition:       e.Event,
 						TransitionStatus: pb.OpStatus_DONE_OK,
 						Vars:             nil,
+						LastRequestUser:  env.GetLastRequestUser(),
 					}
 					if e.Err != nil {
 						runEvent.Error = e.Err.Error()
@@ -510,6 +524,7 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 						Transition:       e.Event,
 						TransitionStatus: pb.OpStatus_DONE_OK,
 						Vars:             nil,
+						LastRequestUser:  env.GetLastRequestUser(),
 					}
 					if e.Err != nil {
 						runEvent.Error = e.Err.Error()
@@ -540,6 +555,7 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 							Transition:       e.Event,
 							TransitionStatus: pb.OpStatus_DONE_OK,
 							Vars:             nil,
+							LastRequestUser:  env.GetLastRequestUser(),
 						}, runEndCompletionTime)
 
 					} else {
@@ -554,13 +570,14 @@ func newEnvironment(userVars map[string]string, newId uid.ID) (env *Environment,
 				}
 				// publish transition step complete event
 				the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-					EnvironmentId:  env.id.String(),
-					State:          env.Sm.Current(),
-					RunNumber:      env.currentRunNumber,
-					Error:          errorMsg,
-					Message:        "transition step finished",
-					Transition:     e.Event,
-					TransitionStep: trigger,
+					EnvironmentId:   env.id.String(),
+					State:           env.Sm.Current(),
+					RunNumber:       env.currentRunNumber,
+					Error:           errorMsg,
+					Message:         "transition step finished",
+					Transition:      e.Event,
+					TransitionStep:  trigger,
+					LastRequestUser: env.GetLastRequestUser(),
 				})
 			},
 		},
@@ -871,22 +888,24 @@ func (env *Environment) runTasksAsHooks(hooksToTrigger task.Tasks) (errorMap map
 
 func (env *Environment) TryTransition(t Transition) (err error) {
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-		EnvironmentId: env.id.String(),
-		State:         env.Sm.Current(),
-		RunNumber:     env.currentRunNumber,
-		Message:       "transition starting",
-		Transition:    t.eventName(),
+		EnvironmentId:   env.id.String(),
+		State:           env.Sm.Current(),
+		RunNumber:       env.currentRunNumber,
+		Message:         "transition starting",
+		Transition:      t.eventName(),
+		LastRequestUser: env.GetLastRequestUser(),
 	})
 
 	err = t.check()
 	if err != nil {
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-			EnvironmentId: env.id.String(),
-			State:         env.Sm.Current(),
-			RunNumber:     env.currentRunNumber,
-			Error:         err.Error(),
-			Message:       "transition impossible",
-			Transition:    t.eventName(),
+			EnvironmentId:   env.id.String(),
+			State:           env.Sm.Current(),
+			RunNumber:       env.currentRunNumber,
+			Error:           err.Error(),
+			Message:         "transition impossible",
+			Transition:      t.eventName(),
+			LastRequestUser: env.GetLastRequestUser(),
 		})
 		return
 	}
@@ -894,20 +913,22 @@ func (env *Environment) TryTransition(t Transition) (err error) {
 
 	if err != nil {
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-			EnvironmentId: env.id.String(),
-			State:         env.Sm.Current(),
-			RunNumber:     env.currentRunNumber,
-			Error:         err.Error(),
-			Message:       "transition error",
-			Transition:    t.eventName(),
+			EnvironmentId:   env.id.String(),
+			State:           env.Sm.Current(),
+			RunNumber:       env.currentRunNumber,
+			Error:           err.Error(),
+			Message:         "transition error",
+			Transition:      t.eventName(),
+			LastRequestUser: env.GetLastRequestUser(),
 		})
 	} else {
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&pb.Ev_EnvironmentEvent{
-			EnvironmentId: env.id.String(),
-			State:         env.Sm.Current(),
-			RunNumber:     env.currentRunNumber,
-			Message:       "transition completed successfully",
-			Transition:    t.eventName(),
+			EnvironmentId:   env.id.String(),
+			State:           env.Sm.Current(),
+			RunNumber:       env.currentRunNumber,
+			Message:         "transition completed successfully",
+			Transition:      t.eventName(),
+			LastRequestUser: env.GetLastRequestUser(),
 		})
 	}
 	return
@@ -985,6 +1006,28 @@ func (env *Environment) CurrentTransition() string {
 	return env.currentTransition
 }
 
+func (env *Environment) SetLastRequestUser(lastRequestUser *pb.User) {
+	if env == nil {
+		return
+	}
+	lastRequestUserJ, err := json.Marshal(lastRequestUser)
+	if err == nil {
+		env.UserVars.Set("last_request_user", string(lastRequestUserJ[:]))
+	}
+}
+
+func (env *Environment) GetLastRequestUser() *pb.User {
+	if env == nil {
+		return nil
+	}
+	lastRequestUser := &pb.User{}
+	lastRequestUserJ, ok := env.UserVars.Get("last_request_user")
+	if ok {
+		_ = json.Unmarshal([]byte(lastRequestUserJ), lastRequestUser)
+	}
+	return lastRequestUser
+}
+
 func (env *Environment) IsSafeToStop() bool {
 	tasks := env.Workflow().GetTasks()
 	for _, t := range tasks {
diff --git a/core/environment/manager.go b/core/environment/manager.go
index 63440b66..0e67e4af 100644
--- a/core/environment/manager.go
+++ b/core/environment/manager.go
@@ -25,6 +25,7 @@
 package environment
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"strconv"
@@ -223,12 +224,19 @@ func (envs *Manager) CreateEnvironment(workflowPath string, userVars map[string]
 	// created environment.
 	alreadyActiveDetectors := envs.GetActiveDetectors()
 
+	lastRequestUser := &evpb.User{}
+	lastRequestUserJ, ok := userVars["last_request_user"]
+	if ok {
+		_ = json.Unmarshal([]byte(lastRequestUserJ), lastRequestUser)
+	}
+
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  newId.String(),
-		State:          "PENDING",
-		Transition:     "CREATE",
-		TransitionStep: "before_CREATE",
-		Message:        "instantiating",
+		EnvironmentId:   newId.String(),
+		State:           "PENDING",
+		Transition:      "CREATE",
+		TransitionStep:  "before_CREATE",
+		Message:         "instantiating",
+		LastRequestUser: lastRequestUser,
 	})
 
 	// userVar identifiers come in 2 forms:
@@ -301,11 +309,12 @@ func (envs *Manager) CreateEnvironment(workflowPath string, userVars map[string]
 	}).Info("creating new environment")
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  newId.String(),
-		State:          "PENDING",
-		Transition:     "CREATE",
-		TransitionStep: "before_CREATE",
-		Message:        "running hooks",
+		EnvironmentId:   newId.String(),
+		State:           "PENDING",
+		Transition:      "CREATE",
+		TransitionStep:  "before_CREATE",
+		Message:         "running hooks",
+		LastRequestUser: lastRequestUser,
 	})
 
 	env.hookHandlerF = func(hooks task.Tasks) error {
@@ -327,11 +336,12 @@ func (envs *Manager) CreateEnvironment(workflowPath string, userVars map[string]
 	}
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  newId.String(),
-		State:          "PENDING",
-		Transition:     "CREATE",
-		TransitionStep: "CREATE",
-		Message:        "loading workflow",
+		EnvironmentId:   newId.String(),
+		State:           "PENDING",
+		Transition:      "CREATE",
+		TransitionStep:  "CREATE",
+		Message:         "loading workflow",
+		LastRequestUser: lastRequestUser,
 	})
 
 	// We load the workflow (includes template processing)
@@ -372,12 +382,13 @@ func (envs *Manager) CreateEnvironment(workflowPath string, userVars map[string]
 
 	cvs, _ := env.Workflow().ConsolidatedVarStack()
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  newId.String(),
-		State:          env.CurrentState(),
-		Transition:     "CREATE",
-		TransitionStep: "after_CREATE",
-		Message:        "workflow loaded",
-		Vars:           cvs, // we push the full var stack of the root role in the workflow loaded event
+		EnvironmentId:   newId.String(),
+		State:           env.CurrentState(),
+		Transition:      "CREATE",
+		TransitionStep:  "after_CREATE",
+		Message:         "workflow loaded",
+		Vars:            cvs, // we push the full var stack of the root role in the workflow loaded event
+		LastRequestUser: lastRequestUser,
 	})
 
 	log.WithField("method", "CreateEnvironment").
@@ -576,11 +587,12 @@ func (envs *Manager) TeardownEnvironment(environmentId uid.ID, force bool) error
 	}
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  environmentId.String(),
-		State:          env.CurrentState(),
-		Transition:     "DESTROY",
-		TransitionStep: "before_DESTROY",
-		Message:        "workflow teardown started",
+		EnvironmentId:   environmentId.String(),
+		State:           env.CurrentState(),
+		Transition:      "DESTROY",
+		TransitionStep:  "before_DESTROY",
+		Message:         "workflow teardown started",
+		LastRequestUser: env.GetLastRequestUser(),
 	})
 
 	env.Mu.Lock()
@@ -588,11 +600,12 @@ func (envs *Manager) TeardownEnvironment(environmentId uid.ID, force bool) error
 	env.Mu.Unlock()
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  environmentId.String(),
-		State:          env.CurrentState(),
-		Transition:     "DESTROY",
-		TransitionStep: "leave_" + env.CurrentState(),
-		Message:        "workflow teardown ongoing",
+		EnvironmentId:   environmentId.String(),
+		State:           env.CurrentState(),
+		Transition:      "DESTROY",
+		TransitionStep:  "leave_" + env.CurrentState(),
+		Message:         "workflow teardown ongoing",
+		LastRequestUser: env.GetLastRequestUser(),
 	})
 
 	err = env.handleHooks(env.Workflow(), "leave_"+env.CurrentState())
@@ -672,11 +685,12 @@ func (envs *Manager) TeardownEnvironment(environmentId uid.ID, force bool) error
 	}
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  environmentId.String(),
-		State:          env.CurrentState(),
-		Transition:     "DESTROY",
-		TransitionStep: "DESTROY",
-		Message:        "releasing tasks",
+		EnvironmentId:   environmentId.String(),
+		State:           env.CurrentState(),
+		Transition:      "DESTROY",
+		TransitionStep:  "DESTROY",
+		Message:         "releasing tasks",
+		LastRequestUser: env.GetLastRequestUser(),
 	})
 
 	log.WithField("method", "TeardownEnvironment").
@@ -738,23 +752,25 @@ func (envs *Manager) TeardownEnvironment(environmentId uid.ID, force bool) error
 			len(taskReleaseErrors), environmentId)
 
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-			EnvironmentId:  environmentId.String(),
-			State:          "DONE",
-			Transition:     "DESTROY",
-			TransitionStep: "after_DESTROY",
-			Message:        "environment teardown finished with error",
-			Error:          err.Error(),
+			EnvironmentId:   environmentId.String(),
+			State:           "DONE",
+			Transition:      "DESTROY",
+			TransitionStep:  "after_DESTROY",
+			Message:         "environment teardown finished with error",
+			Error:           err.Error(),
+			LastRequestUser: env.GetLastRequestUser(),
 		})
 
 		return err
 	}
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  environmentId.String(),
-		State:          env.CurrentState(),
-		Transition:     "DESTROY",
-		TransitionStep: "after_DESTROY",
-		Message:        "running DESTROY hooks",
+		EnvironmentId:   environmentId.String(),
+		State:           env.CurrentState(),
+		Transition:      "DESTROY",
+		TransitionStep:  "after_DESTROY",
+		Message:         "running DESTROY hooks",
+		LastRequestUser: env.GetLastRequestUser(),
 	})
 
 	// we trigger all cleanup hooks, first calls, then tasks immediately after
@@ -816,12 +832,13 @@ func (envs *Manager) TeardownEnvironment(environmentId uid.ID, force bool) error
 			len(taskReleaseErrors), environmentId)
 
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-			EnvironmentId:  environmentId.String(),
-			State:          "DONE",
-			Transition:     "DESTROY",
-			TransitionStep: "after_DESTROY",
-			Message:        "environment teardown finished with error",
-			Error:          err.Error(),
+			EnvironmentId:   environmentId.String(),
+			State:           "DONE",
+			Transition:      "DESTROY",
+			TransitionStep:  "after_DESTROY",
+			Message:         "environment teardown finished with error",
+			Error:           err.Error(),
+			LastRequestUser: env.GetLastRequestUser(),
 		})
 
 		return err
@@ -841,11 +858,12 @@ func (envs *Manager) TeardownEnvironment(environmentId uid.ID, force bool) error
 		Debug("envman write lock")
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId:  environmentId.String(),
-		State:          "DONE",
-		Transition:     "DESTROY",
-		TransitionStep: "after_DESTROY",
-		Message:        "environment teardown complete",
+		EnvironmentId:   environmentId.String(),
+		State:           "DONE",
+		Transition:      "DESTROY",
+		TransitionStep:  "after_DESTROY",
+		Message:         "environment teardown complete",
+		LastRequestUser: env.GetLastRequestUser(),
 	})
 
 	return err
diff --git a/core/protos/o2control.pb.go b/core/protos/o2control.pb.go
index 8c846cff..dbd2b96e 100644
--- a/core/protos/o2control.pb.go
+++ b/core/protos/o2control.pb.go
@@ -998,6 +998,7 @@ type NewEnvironmentRequest struct {
 	Vars             map[string]string `protobuf:"bytes,2,rep,name=vars,proto3" json:"vars,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	Public           bool              `protobuf:"varint,3,opt,name=public,proto3" json:"public,omitempty"`
 	AutoTransition   bool              `protobuf:"varint,4,opt,name=autoTransition,proto3" json:"autoTransition,omitempty"`
+	RequestUser      *protos.User      `protobuf:"bytes,5,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *NewEnvironmentRequest) Reset() {
@@ -1060,6 +1061,13 @@ func (x *NewEnvironmentRequest) GetAutoTransition() bool {
 	return false
 }
 
+func (x *NewEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type NewEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1123,6 +1131,7 @@ type NewAutoEnvironmentRequest struct {
 	WorkflowTemplate string            `protobuf:"bytes,1,opt,name=workflowTemplate,proto3" json:"workflowTemplate,omitempty"`
 	Vars             map[string]string `protobuf:"bytes,2,rep,name=vars,proto3" json:"vars,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	Id               string            `protobuf:"bytes,3,opt,name=id,proto3" json:"id,omitempty"`
+	RequestUser      *protos.User      `protobuf:"bytes,4,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *NewAutoEnvironmentRequest) Reset() {
@@ -1178,6 +1187,13 @@ func (x *NewAutoEnvironmentRequest) GetId() string {
 	return ""
 }
 
+func (x *NewAutoEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type NewAutoEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1339,8 +1355,9 @@ type ControlEnvironmentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id   string                           `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	Type ControlEnvironmentRequest_Optype `protobuf:"varint,2,opt,name=type,proto3,enum=o2control.ControlEnvironmentRequest_Optype" json:"type,omitempty"`
+	Id          string                           `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Type        ControlEnvironmentRequest_Optype `protobuf:"varint,2,opt,name=type,proto3,enum=o2control.ControlEnvironmentRequest_Optype" json:"type,omitempty"`
+	RequestUser *protos.User                     `protobuf:"bytes,3,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *ControlEnvironmentRequest) Reset() {
@@ -1389,6 +1406,13 @@ func (x *ControlEnvironmentRequest) GetType() ControlEnvironmentRequest_Optype {
 	return ControlEnvironmentRequest_NOOP
 }
 
+func (x *ControlEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type ControlEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1663,10 +1687,11 @@ type DestroyEnvironmentRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id                  string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	KeepTasks           bool   `protobuf:"varint,2,opt,name=keepTasks,proto3" json:"keepTasks,omitempty"`
-	AllowInRunningState bool   `protobuf:"varint,3,opt,name=allowInRunningState,proto3" json:"allowInRunningState,omitempty"`
-	Force               bool   `protobuf:"varint,4,opt,name=force,proto3" json:"force,omitempty"`
+	Id                  string       `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	KeepTasks           bool         `protobuf:"varint,2,opt,name=keepTasks,proto3" json:"keepTasks,omitempty"`
+	AllowInRunningState bool         `protobuf:"varint,3,opt,name=allowInRunningState,proto3" json:"allowInRunningState,omitempty"`
+	Force               bool         `protobuf:"varint,4,opt,name=force,proto3" json:"force,omitempty"`
+	RequestUser         *protos.User `protobuf:"bytes,5,opt,name=requestUser,proto3" json:"requestUser,omitempty"`
 }
 
 func (x *DestroyEnvironmentRequest) Reset() {
@@ -1729,6 +1754,13 @@ func (x *DestroyEnvironmentRequest) GetForce() bool {
 	return false
 }
 
+func (x *DestroyEnvironmentRequest) GetRequestUser() *protos.User {
+	if x != nil {
+		return x.RequestUser
+	}
+	return nil
+}
+
 type DestroyEnvironmentReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -4277,7 +4309,7 @@ var file_protos_o2control_proto_rawDesc = []byte{
 	0x74, 0x72, 0x79, 0x12, 0x10, 0x0a, 0x03, 0x6b, 0x65, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
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@@ -4289,7 +4321,10 @@ var file_protos_o2control_proto_rawDesc = []byte{
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@@ -4299,7 +4334,7 @@ var file_protos_o2control_proto_rawDesc = []byte{
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@@ -4309,7 +4344,10 @@ var file_protos_o2control_proto_rawDesc = []byte{
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@@ -4330,13 +4368,16 @@ var file_protos_o2control_proto_rawDesc = []byte{
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@@ -4387,7 +4428,7 @@ var file_protos_o2control_proto_rawDesc = []byte{
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@@ -4397,7 +4438,10 @@ var file_protos_o2control_proto_rawDesc = []byte{
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@@ -4981,7 +5025,8 @@ var file_protos_o2control_proto_goTypes = []interface{}{
 	nil,                                     // 77: o2control.RoleInfo.ConsolidatedStackEntry
 	nil,                                     // 78: o2control.WorkflowTemplateInfo.VarSpecMapEntry
 	nil,                                     // 79: o2control.ListIntegratedServicesReply.ServicesEntry
-	(*protos.Event)(nil),                    // 80: events.Event
+	(*protos.User)(nil),                     // 80: common.User
+	(*protos.Event)(nil),                    // 81: events.Event
 }
 var file_protos_o2control_proto_depIdxs = []int32{
 	6,  // 0: o2control.GetFrameworkInfoReply.version:type_name -> o2control.Version
@@ -4992,98 +5037,102 @@ var file_protos_o2control_proto_depIdxs = []int32{
 	67, // 5: o2control.EnvironmentInfo.userVars:type_name -> o2control.EnvironmentInfo.UserVarsEntry
 	68, // 6: o2control.EnvironmentInfo.integratedServicesData:type_name -> o2control.EnvironmentInfo.IntegratedServicesDataEntry
 	69, // 7: o2control.NewEnvironmentRequest.vars:type_name -> o2control.NewEnvironmentRequest.VarsEntry
-	12, // 8: o2control.NewEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
-	70, // 9: o2control.NewAutoEnvironmentRequest.vars:type_name -> o2control.NewAutoEnvironmentRequest.VarsEntry
-	12, // 10: o2control.GetEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
-	44, // 11: o2control.GetEnvironmentReply.workflow:type_name -> o2control.RoleInfo
-	0,  // 12: o2control.ControlEnvironmentRequest.type:type_name -> o2control.ControlEnvironmentRequest.Optype
-	22, // 13: o2control.ModifyEnvironmentRequest.operations:type_name -> o2control.EnvironmentOperation
-	1,  // 14: o2control.EnvironmentOperation.type:type_name -> o2control.EnvironmentOperation.Optype
-	22, // 15: o2control.ModifyEnvironmentReply.failedOperations:type_name -> o2control.EnvironmentOperation
-	42, // 16: o2control.DestroyEnvironmentReply.cleanupTasksReply:type_name -> o2control.CleanupTasksReply
-	71, // 17: o2control.SetEnvironmentPropertiesRequest.properties:type_name -> o2control.SetEnvironmentPropertiesRequest.PropertiesEntry
-	72, // 18: o2control.GetEnvironmentPropertiesReply.properties:type_name -> o2control.GetEnvironmentPropertiesReply.PropertiesEntry
-	33, // 19: o2control.ShortTaskInfo.deploymentInfo:type_name -> o2control.TaskDeploymentInfo
-	32, // 20: o2control.GetTasksReply.tasks:type_name -> o2control.ShortTaskInfo
-	40, // 21: o2control.GetTaskReply.task:type_name -> o2control.TaskInfo
-	32, // 22: o2control.TaskInfo.shortInfo:type_name -> o2control.ShortTaskInfo
-	39, // 23: o2control.TaskInfo.inboundChannels:type_name -> o2control.ChannelInfo
-	39, // 24: o2control.TaskInfo.outboundChannels:type_name -> o2control.ChannelInfo
-	38, // 25: o2control.TaskInfo.commandInfo:type_name -> o2control.CommandInfo
-	73, // 26: o2control.TaskInfo.properties:type_name -> o2control.TaskInfo.PropertiesEntry
-	32, // 27: o2control.CleanupTasksReply.killedTasks:type_name -> o2control.ShortTaskInfo
-	32, // 28: o2control.CleanupTasksReply.runningTasks:type_name -> o2control.ShortTaskInfo
-	44, // 29: o2control.RoleInfo.roles:type_name -> o2control.RoleInfo
-	74, // 30: o2control.RoleInfo.defaults:type_name -> o2control.RoleInfo.DefaultsEntry
-	75, // 31: o2control.RoleInfo.vars:type_name -> o2control.RoleInfo.VarsEntry
-	76, // 32: o2control.RoleInfo.userVars:type_name -> o2control.RoleInfo.UserVarsEntry
-	77, // 33: o2control.RoleInfo.consolidatedStack:type_name -> o2control.RoleInfo.ConsolidatedStackEntry
-	44, // 34: o2control.GetRolesReply.roles:type_name -> o2control.RoleInfo
-	3,  // 35: o2control.VarSpecMessage.type:type_name -> o2control.VarSpecMessage.Type
-	2,  // 36: o2control.VarSpecMessage.widget:type_name -> o2control.VarSpecMessage.UiWidget
-	78, // 37: o2control.WorkflowTemplateInfo.varSpecMap:type_name -> o2control.WorkflowTemplateInfo.VarSpecMapEntry
-	48, // 38: o2control.GetWorkflowTemplatesReply.workflowTemplates:type_name -> o2control.WorkflowTemplateInfo
-	51, // 39: o2control.ListReposReply.repos:type_name -> o2control.RepoInfo
-	79, // 40: o2control.ListIntegratedServicesReply.services:type_name -> o2control.ListIntegratedServicesReply.ServicesEntry
-	47, // 41: o2control.WorkflowTemplateInfo.VarSpecMapEntry.value:type_name -> o2control.VarSpecMessage
-	64, // 42: o2control.ListIntegratedServicesReply.ServicesEntry.value:type_name -> o2control.IntegratedServiceInfo
-	5,  // 43: o2control.Control.GetFrameworkInfo:input_type -> o2control.GetFrameworkInfoRequest
-	10, // 44: o2control.Control.GetEnvironments:input_type -> o2control.GetEnvironmentsRequest
-	15, // 45: o2control.Control.NewAutoEnvironment:input_type -> o2control.NewAutoEnvironmentRequest
-	13, // 46: o2control.Control.NewEnvironment:input_type -> o2control.NewEnvironmentRequest
-	17, // 47: o2control.Control.GetEnvironment:input_type -> o2control.GetEnvironmentRequest
-	19, // 48: o2control.Control.ControlEnvironment:input_type -> o2control.ControlEnvironmentRequest
-	24, // 49: o2control.Control.DestroyEnvironment:input_type -> o2control.DestroyEnvironmentRequest
-	62, // 50: o2control.Control.GetActiveDetectors:input_type -> o2control.Empty
-	62, // 51: o2control.Control.GetAvailableDetectors:input_type -> o2control.Empty
-	13, // 52: o2control.Control.NewEnvironmentAsync:input_type -> o2control.NewEnvironmentRequest
-	34, // 53: o2control.Control.GetTasks:input_type -> o2control.GetTasksRequest
-	36, // 54: o2control.Control.GetTask:input_type -> o2control.GetTaskRequest
-	41, // 55: o2control.Control.CleanupTasks:input_type -> o2control.CleanupTasksRequest
-	43, // 56: o2control.Control.GetRoles:input_type -> o2control.GetRolesRequest
-	46, // 57: o2control.Control.GetWorkflowTemplates:input_type -> o2control.GetWorkflowTemplatesRequest
-	50, // 58: o2control.Control.ListRepos:input_type -> o2control.ListReposRequest
-	53, // 59: o2control.Control.AddRepo:input_type -> o2control.AddRepoRequest
-	55, // 60: o2control.Control.RemoveRepo:input_type -> o2control.RemoveRepoRequest
-	57, // 61: o2control.Control.RefreshRepos:input_type -> o2control.RefreshReposRequest
-	58, // 62: o2control.Control.SetDefaultRepo:input_type -> o2control.SetDefaultRepoRequest
-	59, // 63: o2control.Control.SetGlobalDefaultRevision:input_type -> o2control.SetGlobalDefaultRevisionRequest
-	60, // 64: o2control.Control.SetRepoDefaultRevision:input_type -> o2control.SetRepoDefaultRevisionRequest
-	4,  // 65: o2control.Control.Subscribe:input_type -> o2control.SubscribeRequest
-	62, // 66: o2control.Control.GetIntegratedServices:input_type -> o2control.Empty
-	8,  // 67: o2control.Control.Teardown:input_type -> o2control.TeardownRequest
-	21, // 68: o2control.Control.ModifyEnvironment:input_type -> o2control.ModifyEnvironmentRequest
-	7,  // 69: o2control.Control.GetFrameworkInfo:output_type -> o2control.GetFrameworkInfoReply
-	11, // 70: o2control.Control.GetEnvironments:output_type -> o2control.GetEnvironmentsReply
-	16, // 71: o2control.Control.NewAutoEnvironment:output_type -> o2control.NewAutoEnvironmentReply
-	14, // 72: o2control.Control.NewEnvironment:output_type -> o2control.NewEnvironmentReply
-	18, // 73: o2control.Control.GetEnvironment:output_type -> o2control.GetEnvironmentReply
-	20, // 74: o2control.Control.ControlEnvironment:output_type -> o2control.ControlEnvironmentReply
-	25, // 75: o2control.Control.DestroyEnvironment:output_type -> o2control.DestroyEnvironmentReply
-	26, // 76: o2control.Control.GetActiveDetectors:output_type -> o2control.GetActiveDetectorsReply
-	27, // 77: o2control.Control.GetAvailableDetectors:output_type -> o2control.GetAvailableDetectorsReply
-	14, // 78: o2control.Control.NewEnvironmentAsync:output_type -> o2control.NewEnvironmentReply
-	35, // 79: o2control.Control.GetTasks:output_type -> o2control.GetTasksReply
-	37, // 80: o2control.Control.GetTask:output_type -> o2control.GetTaskReply
-	42, // 81: o2control.Control.CleanupTasks:output_type -> o2control.CleanupTasksReply
-	45, // 82: o2control.Control.GetRoles:output_type -> o2control.GetRolesReply
-	49, // 83: o2control.Control.GetWorkflowTemplates:output_type -> o2control.GetWorkflowTemplatesReply
-	52, // 84: o2control.Control.ListRepos:output_type -> o2control.ListReposReply
-	54, // 85: o2control.Control.AddRepo:output_type -> o2control.AddRepoReply
-	56, // 86: o2control.Control.RemoveRepo:output_type -> o2control.RemoveRepoReply
-	62, // 87: o2control.Control.RefreshRepos:output_type -> o2control.Empty
-	62, // 88: o2control.Control.SetDefaultRepo:output_type -> o2control.Empty
-	62, // 89: o2control.Control.SetGlobalDefaultRevision:output_type -> o2control.Empty
-	61, // 90: o2control.Control.SetRepoDefaultRevision:output_type -> o2control.SetRepoDefaultRevisionReply
-	80, // 91: o2control.Control.Subscribe:output_type -> events.Event
-	63, // 92: o2control.Control.GetIntegratedServices:output_type -> o2control.ListIntegratedServicesReply
-	9,  // 93: o2control.Control.Teardown:output_type -> o2control.TeardownReply
-	23, // 94: o2control.Control.ModifyEnvironment:output_type -> o2control.ModifyEnvironmentReply
-	69, // [69:95] is the sub-list for method output_type
-	43, // [43:69] is the sub-list for method input_type
-	43, // [43:43] is the sub-list for extension type_name
-	43, // [43:43] is the sub-list for extension extendee
-	0,  // [0:43] is the sub-list for field type_name
+	80, // 8: o2control.NewEnvironmentRequest.requestUser:type_name -> common.User
+	12, // 9: o2control.NewEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
+	70, // 10: o2control.NewAutoEnvironmentRequest.vars:type_name -> o2control.NewAutoEnvironmentRequest.VarsEntry
+	80, // 11: o2control.NewAutoEnvironmentRequest.requestUser:type_name -> common.User
+	12, // 12: o2control.GetEnvironmentReply.environment:type_name -> o2control.EnvironmentInfo
+	44, // 13: o2control.GetEnvironmentReply.workflow:type_name -> o2control.RoleInfo
+	0,  // 14: o2control.ControlEnvironmentRequest.type:type_name -> o2control.ControlEnvironmentRequest.Optype
+	80, // 15: o2control.ControlEnvironmentRequest.requestUser:type_name -> common.User
+	22, // 16: o2control.ModifyEnvironmentRequest.operations:type_name -> o2control.EnvironmentOperation
+	1,  // 17: o2control.EnvironmentOperation.type:type_name -> o2control.EnvironmentOperation.Optype
+	22, // 18: o2control.ModifyEnvironmentReply.failedOperations:type_name -> o2control.EnvironmentOperation
+	80, // 19: o2control.DestroyEnvironmentRequest.requestUser:type_name -> common.User
+	42, // 20: o2control.DestroyEnvironmentReply.cleanupTasksReply:type_name -> o2control.CleanupTasksReply
+	71, // 21: o2control.SetEnvironmentPropertiesRequest.properties:type_name -> o2control.SetEnvironmentPropertiesRequest.PropertiesEntry
+	72, // 22: o2control.GetEnvironmentPropertiesReply.properties:type_name -> o2control.GetEnvironmentPropertiesReply.PropertiesEntry
+	33, // 23: o2control.ShortTaskInfo.deploymentInfo:type_name -> o2control.TaskDeploymentInfo
+	32, // 24: o2control.GetTasksReply.tasks:type_name -> o2control.ShortTaskInfo
+	40, // 25: o2control.GetTaskReply.task:type_name -> o2control.TaskInfo
+	32, // 26: o2control.TaskInfo.shortInfo:type_name -> o2control.ShortTaskInfo
+	39, // 27: o2control.TaskInfo.inboundChannels:type_name -> o2control.ChannelInfo
+	39, // 28: o2control.TaskInfo.outboundChannels:type_name -> o2control.ChannelInfo
+	38, // 29: o2control.TaskInfo.commandInfo:type_name -> o2control.CommandInfo
+	73, // 30: o2control.TaskInfo.properties:type_name -> o2control.TaskInfo.PropertiesEntry
+	32, // 31: o2control.CleanupTasksReply.killedTasks:type_name -> o2control.ShortTaskInfo
+	32, // 32: o2control.CleanupTasksReply.runningTasks:type_name -> o2control.ShortTaskInfo
+	44, // 33: o2control.RoleInfo.roles:type_name -> o2control.RoleInfo
+	74, // 34: o2control.RoleInfo.defaults:type_name -> o2control.RoleInfo.DefaultsEntry
+	75, // 35: o2control.RoleInfo.vars:type_name -> o2control.RoleInfo.VarsEntry
+	76, // 36: o2control.RoleInfo.userVars:type_name -> o2control.RoleInfo.UserVarsEntry
+	77, // 37: o2control.RoleInfo.consolidatedStack:type_name -> o2control.RoleInfo.ConsolidatedStackEntry
+	44, // 38: o2control.GetRolesReply.roles:type_name -> o2control.RoleInfo
+	3,  // 39: o2control.VarSpecMessage.type:type_name -> o2control.VarSpecMessage.Type
+	2,  // 40: o2control.VarSpecMessage.widget:type_name -> o2control.VarSpecMessage.UiWidget
+	78, // 41: o2control.WorkflowTemplateInfo.varSpecMap:type_name -> o2control.WorkflowTemplateInfo.VarSpecMapEntry
+	48, // 42: o2control.GetWorkflowTemplatesReply.workflowTemplates:type_name -> o2control.WorkflowTemplateInfo
+	51, // 43: o2control.ListReposReply.repos:type_name -> o2control.RepoInfo
+	79, // 44: o2control.ListIntegratedServicesReply.services:type_name -> o2control.ListIntegratedServicesReply.ServicesEntry
+	47, // 45: o2control.WorkflowTemplateInfo.VarSpecMapEntry.value:type_name -> o2control.VarSpecMessage
+	64, // 46: o2control.ListIntegratedServicesReply.ServicesEntry.value:type_name -> o2control.IntegratedServiceInfo
+	5,  // 47: o2control.Control.GetFrameworkInfo:input_type -> o2control.GetFrameworkInfoRequest
+	10, // 48: o2control.Control.GetEnvironments:input_type -> o2control.GetEnvironmentsRequest
+	15, // 49: o2control.Control.NewAutoEnvironment:input_type -> o2control.NewAutoEnvironmentRequest
+	13, // 50: o2control.Control.NewEnvironment:input_type -> o2control.NewEnvironmentRequest
+	17, // 51: o2control.Control.GetEnvironment:input_type -> o2control.GetEnvironmentRequest
+	19, // 52: o2control.Control.ControlEnvironment:input_type -> o2control.ControlEnvironmentRequest
+	24, // 53: o2control.Control.DestroyEnvironment:input_type -> o2control.DestroyEnvironmentRequest
+	62, // 54: o2control.Control.GetActiveDetectors:input_type -> o2control.Empty
+	62, // 55: o2control.Control.GetAvailableDetectors:input_type -> o2control.Empty
+	13, // 56: o2control.Control.NewEnvironmentAsync:input_type -> o2control.NewEnvironmentRequest
+	34, // 57: o2control.Control.GetTasks:input_type -> o2control.GetTasksRequest
+	36, // 58: o2control.Control.GetTask:input_type -> o2control.GetTaskRequest
+	41, // 59: o2control.Control.CleanupTasks:input_type -> o2control.CleanupTasksRequest
+	43, // 60: o2control.Control.GetRoles:input_type -> o2control.GetRolesRequest
+	46, // 61: o2control.Control.GetWorkflowTemplates:input_type -> o2control.GetWorkflowTemplatesRequest
+	50, // 62: o2control.Control.ListRepos:input_type -> o2control.ListReposRequest
+	53, // 63: o2control.Control.AddRepo:input_type -> o2control.AddRepoRequest
+	55, // 64: o2control.Control.RemoveRepo:input_type -> o2control.RemoveRepoRequest
+	57, // 65: o2control.Control.RefreshRepos:input_type -> o2control.RefreshReposRequest
+	58, // 66: o2control.Control.SetDefaultRepo:input_type -> o2control.SetDefaultRepoRequest
+	59, // 67: o2control.Control.SetGlobalDefaultRevision:input_type -> o2control.SetGlobalDefaultRevisionRequest
+	60, // 68: o2control.Control.SetRepoDefaultRevision:input_type -> o2control.SetRepoDefaultRevisionRequest
+	4,  // 69: o2control.Control.Subscribe:input_type -> o2control.SubscribeRequest
+	62, // 70: o2control.Control.GetIntegratedServices:input_type -> o2control.Empty
+	8,  // 71: o2control.Control.Teardown:input_type -> o2control.TeardownRequest
+	21, // 72: o2control.Control.ModifyEnvironment:input_type -> o2control.ModifyEnvironmentRequest
+	7,  // 73: o2control.Control.GetFrameworkInfo:output_type -> o2control.GetFrameworkInfoReply
+	11, // 74: o2control.Control.GetEnvironments:output_type -> o2control.GetEnvironmentsReply
+	16, // 75: o2control.Control.NewAutoEnvironment:output_type -> o2control.NewAutoEnvironmentReply
+	14, // 76: o2control.Control.NewEnvironment:output_type -> o2control.NewEnvironmentReply
+	18, // 77: o2control.Control.GetEnvironment:output_type -> o2control.GetEnvironmentReply
+	20, // 78: o2control.Control.ControlEnvironment:output_type -> o2control.ControlEnvironmentReply
+	25, // 79: o2control.Control.DestroyEnvironment:output_type -> o2control.DestroyEnvironmentReply
+	26, // 80: o2control.Control.GetActiveDetectors:output_type -> o2control.GetActiveDetectorsReply
+	27, // 81: o2control.Control.GetAvailableDetectors:output_type -> o2control.GetAvailableDetectorsReply
+	14, // 82: o2control.Control.NewEnvironmentAsync:output_type -> o2control.NewEnvironmentReply
+	35, // 83: o2control.Control.GetTasks:output_type -> o2control.GetTasksReply
+	37, // 84: o2control.Control.GetTask:output_type -> o2control.GetTaskReply
+	42, // 85: o2control.Control.CleanupTasks:output_type -> o2control.CleanupTasksReply
+	45, // 86: o2control.Control.GetRoles:output_type -> o2control.GetRolesReply
+	49, // 87: o2control.Control.GetWorkflowTemplates:output_type -> o2control.GetWorkflowTemplatesReply
+	52, // 88: o2control.Control.ListRepos:output_type -> o2control.ListReposReply
+	54, // 89: o2control.Control.AddRepo:output_type -> o2control.AddRepoReply
+	56, // 90: o2control.Control.RemoveRepo:output_type -> o2control.RemoveRepoReply
+	62, // 91: o2control.Control.RefreshRepos:output_type -> o2control.Empty
+	62, // 92: o2control.Control.SetDefaultRepo:output_type -> o2control.Empty
+	62, // 93: o2control.Control.SetGlobalDefaultRevision:output_type -> o2control.Empty
+	61, // 94: o2control.Control.SetRepoDefaultRevision:output_type -> o2control.SetRepoDefaultRevisionReply
+	81, // 95: o2control.Control.Subscribe:output_type -> events.Event
+	63, // 96: o2control.Control.GetIntegratedServices:output_type -> o2control.ListIntegratedServicesReply
+	9,  // 97: o2control.Control.Teardown:output_type -> o2control.TeardownReply
+	23, // 98: o2control.Control.ModifyEnvironment:output_type -> o2control.ModifyEnvironmentReply
+	73, // [73:99] is the sub-list for method output_type
+	47, // [47:73] is the sub-list for method input_type
+	47, // [47:47] is the sub-list for extension type_name
+	47, // [47:47] is the sub-list for extension extendee
+	0,  // [0:47] is the sub-list for field type_name
 }
 
 func init() { file_protos_o2control_proto_init() }
diff --git a/core/protos/o2control.proto b/core/protos/o2control.proto
index f301241d..ee9bd974 100644
--- a/core/protos/o2control.proto
+++ b/core/protos/o2control.proto
@@ -145,6 +145,7 @@ message NewEnvironmentRequest {
     map<string, string> vars = 2;
     bool public = 3;
     bool autoTransition = 4;
+    common.User requestUser = 5;
 }
 message NewEnvironmentReply {
     EnvironmentInfo environment = 1;
@@ -154,6 +155,7 @@ message NewAutoEnvironmentRequest {
     string workflowTemplate = 1;
     map<string, string> vars = 2;
     string id = 3;
+    common.User requestUser = 4;
 }
 message NewAutoEnvironmentReply {
 
@@ -181,6 +183,7 @@ message ControlEnvironmentRequest {
         DEPLOY = 6;
     }
     Optype type = 2;
+    common.User requestUser = 3;
 }
 message ControlEnvironmentReply {
     string id = 1;
@@ -217,6 +220,7 @@ message DestroyEnvironmentRequest {
     bool keepTasks = 2;
     bool allowInRunningState = 3;
     bool force = 4;
+    common.User requestUser = 5;
 }
 message DestroyEnvironmentReply {
     CleanupTasksReply cleanupTasksReply = 1;
diff --git a/core/server.go b/core/server.go
index 18b144b7..3ff3bd9a 100644
--- a/core/server.go
+++ b/core/server.go
@@ -296,13 +296,21 @@ func (m *RpcServer) GetEnvironments(cxt context.Context, request *pb.GetEnvironm
 
 func (m *RpcServer) doNewEnvironmentAsync(cxt context.Context, request *pb.NewEnvironmentRequest, id uid.ID) {
 	var err error
-	id, err = m.state.environments.CreateEnvironment(request.GetWorkflowTemplate(), request.GetVars(), request.GetPublic(), id, request.GetAutoTransition())
+	userVars := request.GetVars()
+	if len(userVars) == 0 {
+		userVars = make(map[string]string)
+	}
+	// we store the last known request user in the environment
+	lastRequestUserJ, _ := json.Marshal(request.RequestUser)
+	userVars["last_request_user"] = string(lastRequestUserJ[:])
+	id, err = m.state.environments.CreateEnvironment(request.GetWorkflowTemplate(), userVars, request.GetPublic(), id, request.GetAutoTransition())
 	if err != nil {
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-			EnvironmentId: id.String(),
-			State:         "ERROR",
-			Error:         "cannot create new environment",
-			Message:       err.Error(),
+			EnvironmentId:   id.String(),
+			State:           "ERROR",
+			Error:           "cannot create new environment",
+			Message:         err.Error(),
+			LastRequestUser: request.RequestUser,
 		})
 		return
 	}
@@ -310,17 +318,19 @@ func (m *RpcServer) doNewEnvironmentAsync(cxt context.Context, request *pb.NewEn
 	newEnv, err := m.state.environments.Environment(id)
 	if err != nil {
 		the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-			EnvironmentId: id.String(),
-			State:         "ERROR",
-			Error:         "cannot get newly created environment",
-			Message:       err.Error(),
+			EnvironmentId:   id.String(),
+			State:           "ERROR",
+			Error:           "cannot get newly created environment",
+			Message:         err.Error(),
+			LastRequestUser: request.RequestUser,
 		})
 		return
 	}
 
 	the.EventWriterWithTopic(topic.Environment).WriteEvent(&evpb.Ev_EnvironmentEvent{
-		EnvironmentId: id.String(),
-		State:         newEnv.CurrentState(),
+		EnvironmentId:   id.String(),
+		State:           newEnv.CurrentState(),
+		LastRequestUser: request.RequestUser,
 	})
 	return
 }
@@ -376,9 +386,17 @@ func (m *RpcServer) NewEnvironment(cxt context.Context, request *pb.NewEnvironme
 
 	reply = &pb.NewEnvironmentReply{Public: request.Public}
 
+	inputUserVars := request.GetVars()
+	if len(inputUserVars) == 0 {
+		inputUserVars = make(map[string]string)
+	}
+	// we store the last known request user in the environment
+	lastRequestUserJ, _ := json.Marshal(request.RequestUser)
+	inputUserVars["last_request_user"] = string(lastRequestUserJ[:])
+
 	// Create new Environment instance with some roles, we get back a UUID
 	id := uid.New()
-	id, err = m.state.environments.CreateEnvironment(request.GetWorkflowTemplate(), request.GetVars(), request.GetPublic(), id, request.GetAutoTransition())
+	id, err = m.state.environments.CreateEnvironment(request.GetWorkflowTemplate(), inputUserVars, request.GetPublic(), id, request.GetAutoTransition())
 	if err != nil {
 		st := status.Newf(codes.Internal, "cannot create new environment: %s", utils.TruncateString(err.Error(), MAX_ERROR_LENGTH))
 		ei := &pb.EnvironmentInfo{
@@ -575,6 +593,8 @@ func (m *RpcServer) ControlEnvironment(cxt context.Context, req *pb.ControlEnvir
 		return nil, status.Newf(codes.NotFound, "environment not found: %s", err.Error()).Err()
 	}
 
+	env.SetLastRequestUser(req.RequestUser)
+
 	trans := environment.MakeTransition(m.state.taskman, req.Type)
 	if trans == nil {
 		return nil, status.Newf(codes.InvalidArgument, "cannot prepare invalid transition %s", req.GetType().String()).Err()
@@ -639,6 +659,8 @@ func (m *RpcServer) DestroyEnvironment(cxt context.Context, req *pb.DestroyEnvir
 		return nil, status.Newf(codes.NotFound, "environment not found: %s", err.Error()).Err()
 	}
 
+	env.SetLastRequestUser(req.RequestUser)
+
 	// if Force immediately disband the environment (unlocking all tasks) and run the cleanup.
 	if req.Force {
 		return m.doTeardownAndCleanup(env, req.Force, req.KeepTasks)