Ethereum co-founder Vitalik Buterin said that a potential 51% attack on ETH 2.0 would not be fatal.
We need to get past the myth that it’s *fatal* if one entity gets enough to 51% attack PoS. The reality is they could attack *once*, and then they either get slashed or (if censorship attack) soft-forked away and inactivity-leaked, and they lose their coins so can’t attack again. https://t.co/utash1hUDU
— vitalik.eth (@VitalikButerin) September 2, 2020
Earlier, concerns were raised by Arcane Assets CIO Eric Wall. In his view, the popularity of the yearn.finance project will attract into the yETH pools enough coins to attack the Ethereum network under the Proof-of-Stake (PoS) mechanism.
ITT: We come up with fun ways yETH vault strategists can take advantage of the fact that yETH is probably going to control more than enough stake to 67%-attack ETH 2.0 PoS
— Eric Wall (@ercwl) September 2, 2020
In response, Buterin stated that a potential attacker would be able to attack the network using coins from the yETH pool only once. After that, the ETH stake would be pruned or separated by a soft fork. In the founder’s view, this is the “fundamental advantage of PoS” over Proof-of-Work.
In PoW, on the other hand, a successful attacker can just attack over and over again, with no possible way to delete their hardware without deleting everyone else’s hardware. This is an underrated key fundamental advantage of PoS over PoW.
— vitalik.eth (@VitalikButerin) September 2, 2020
Earlier, Vitalik Buterin expressed confidence in a successful transition to Ethereum 2.0.
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