51% attacks on Bitcoin and Ethereum won’t be possible any further, says Coin Metrics researchers

[serrq]

In the report, Coin Metrics researchers Lucas Nuzzi, Kyle Water, and Matias Andrade used a metric dubbed “Total Cost to Attack” (TCA) to determine how much it would cost these two blockchains exactly. As per the TCA data, the researchers noted that there are no profitable avenues for attacking Bitcoin and Ethereum.

“In none of the hypothesized attacks presented here [would the attacker] be able to profit by attacking Bitcoin or Ethereum. Consider that even in the most profitable double spend scenario presented, where the attacker could potentially make $1B after spending $40B, that would account for a 2.5% rate of return.”

https://www.coinspeaker.com/51-attacks-bitcoin-ethereum-coin-metrics/