On September 30 MetaMask reported an incident in staking infrastructure and is exiting affected validators, including from Lido; client wallets and funds were not affected, according to its data

On September 30 MetaMask reported an incident in staking infrastructure and is exiting affected validators, including from Lido; client wallets and funds were not affected, according to its data

Liquid staked Ether 2.0 ($stETH) · MetaMask (@metamask)

$stETH, ethereum (+pulsechain): 0xae7ab96520de3a18e5e111b5eaab095312d7fe84 · DexScreener

MetaMask does not hold withdrawal keys, so the staked ETH itself cannot be stolen: the risk is only in lost rewards and downtime penalties. Holders of $stETH do not need to do anything, via Lido the return of ETH to the protocol will take up to 45 days. The cause of the breach and the scale have not been officially disclosed, so researcher figures remain estimates.

Facts

• On September 30 at 23:38 UTC MetaMask announced an incident in part of the infrastructure, found no threat to wallets and, as a precaution, is exiting affected noncustodial staking validators. [@metamask, September 30, 2026]

• Lido reported that MetaMask Staking validators are exiting the protocol, the last will exit by the end of October 7, lost rewards and penalties are possible; ETH return up to 45 days, stETH holders need no action. [@LidoFinance, September 30, 2026]

• On October 1 MetaMask added: there are no signs that client wallets or funds are affected, investigation and containment continue. [@metamask, October 1, 2026]

• Researcher 0xKaden (as retold by ChainBounty): 18 block payouts went to a foreign address, about 0.36 ETH, the address was funded via Tornado Cash; exit estimate about 17,000 validators and 523,000 ETH. MetaMask has not confirmed these figures. [@ChainBountyX, October 1, 2026]

• $stETH is trading near $2,698, down about 1% per day; there is no notable drawdown relative to ETH in market data. [dexscreener]

Awaiting

• How exactly the infrastructure was breached and how many validators are affected: MetaMask promised verified updates.

• Whether lost rewards will be compensated.

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