>>60665490>https://warosu.org/biz/thread/59617632To revert a finalized block, an attacker would commit to losing at least one-third of the total supply of staked ETH. The exact reason for this is explained in this Ethereum Foundation blog post(opens in a new tab). Since finality requires a two-thirds majority, an attacker could prevent the network from reaching finality by voting with one-third of the total stake. There is a mechanism to defend against this: the inactivity leak(opens in a new tab). This activates whenever the chain fails to finalize for more than four epochs. The inactivity leak bleeds away the staked ETH from validators voting against the majority, allowing the majority to regain a two-thirds majority and finalize the chain.
-----------------------
so any ETH can be expropriated by the only 51%+ validator who is Vitalik_and_foundation