According to Cointelegraph, Ethereum merger architect Justin Drake stated that the cost of attacking Bitcoin is lower than that of Ethereum, approximately $10 billion. The security of Ethereum relies on the social and economic coordination mechanisms of the community.
Ethereum's PoS mechanism allows for the identification and punishment of attackers during a 51% attack, while Bitcoin's PoW mechanism lacks this feature. P2P.org researcher Pavel Yashin stated that if centralization is detected, the community can resolve it through a new fork. The computational and energy demands of Bitcoin make an attack less likely, whereas Ethereum's PoS increases economic and governance barriers.
