MetaMask Hack? Ethereum Validators Exit After Security Incident MetaMask has started exiting affected Ethereum validators following an infrastructure security incident involving its non-custodial staking operations with Lido. All affected validators are expected to exit by October 7, while the full withdrawal process could take up to ~45 days. Lido says $stETH holders need no action, while Aave reports no market impact so far. The exact attack vector remains under investigation.