Ethereum Whale Hack: Multisignature Wallet Breach Drains $27.3M, $12.6M Laundered Through Tornado Cash

According to PeckShield, a high-value actor’s multi-signature wallet was breached following a private-key leak, resulting in an estimated loss of $27.3 million. The outflow is under review, with about $12.6 million laundered through Tornado Cash (roughly 4100 ETH) and the attacker holding roughly $2 million in liquid assets.

Authorities say the compromised wallet controlled a leveraged long position on the Aave protocol: roughly $25 million in ETH was placed as collateral, and about 12.3 million DAI was borrowed.

Security teams emphasize strengthening key management and ongoing DeFi monitoring to mitigate similar risks, as this incident highlights the vulnerability of whale‑level exposure within cross‑chain wallets.