Multisig
5 incidents, 2 live. 37 days since the last new one.
5 drains in the last 12 months
5 drains in the last 12 months
4 drains in 2026
1 drains in 2025
Live
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Critical◐Partly contained
Over-permissioned Safe module abused to drain about $7.8M in rsETH; MEV bot front-runs the thief
On 15 September 2026 an attacker abused a custom Uniswap v4 liquidity module and a Multicall helper that an Ethereum Safe multisig owner had approved, pointing the wallet's position at a malicious pool and unwrapping about 2,882 rsETH (around $7.8M). Blockaid described it as abuse of module permissions on that one Safe, not a bug in Safe itself or a stolen owner key. MEV bot Yoink front-ran the attacker and took the funds, Kelp DAO froze that address within about two hours, and whether the funds come back is unresolved. Safe owners should audit every enabled module.
A user's Safe multisig with a custom Uniswap v4 liquidity module·Ethereum·$7.8M stolen·Since Sep 15, 2026·
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Drift Protocol drained of $270M+ after signers pre-signed durable-nonce admin transactions
On Apr 1, 2026, an attacker took admin control of the Solana perps exchange Drift and drained its vaults of at least $270 million; SlowMist lists $285 million. Weeks earlier, Security Council signers had been led into 'unauthorized or misrepresented' approvals. Because those transactions used durable nonces, they stayed valid until the attacker chose to submit them. The funds were bridged to Ethereum, including more than $230 million in USDC via Circle's CCTP. No code bug was needed. The lesson for teams is that any durable-nonce signing request is high risk.
Drift Protocol (Security Council multisig)·Solana·$285M stolen·Since Apr 1, 2026·
Past
June 2026 1
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Critical◐Partly contained
Humanity Protocol loses $36M after malware on one developer machine exposes hot-wallet and Safe keys
On 8 June 2026 an attacker used private keys taken from a single malware-infected developer machine to seize Humanity Protocol's admin hot wallet and its Safe multisigs on Ethereum (three of six keys) and BNB Chain (three of five). They drained about 141M H tokens, used malicious bridge upgrades to mint hundreds of millions more and sold them, a loss of more than $36M; H fell about 89% from its high. The team halted bridge deposits and withdrawals and told users not to touch the bridge or liquidity pools.
Humanity Protocol (H token) bridges and treasury·Ethereum, BNB Chain·$36M stolen·Since Jun 8, 2026·
May 2026 1
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Critical◐Partly contained
StablR's EURR and USDR depeg after attacker takes over 1-of-3 minting multisig with a stolen key
On 23-24 May 2026 an attacker used the compromised private key of one signer on StablR's 1-of-3 minting multisig to add themselves as owner, replace the other owners and mint 8.35M USDR and 4.5M EURR, about $13.5M face value. They dumped about $10.4M of it on DEXs for ETH, with early net proceeds estimated at $2.8M, pushing USDR as low as $0.40 and EURR to about $0.85. ZachXBT said he helped freeze a six-figure sum.
StablR EURR and USDR stablecoins and holders·Ethereum·$2.8M stolen·Since May 23, 2026·
November 2025 1
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Critical✕Still active
Whale's 1-of-1 Safe multisig drained of $27M+ after key compromise, ETH laundered via Tornado Cash
A private whale's Gnosis Safe on Ethereum, set up so a single signature could approve transactions, was taken over and drained of about $27.3M according to PeckShield; Hacken's forensics say losses may exceed $40M. Ownership passed to the attacker six minutes after the Safe was created on 4 November 2025, and the thief laundered ETH through Tornado Cash in batches while slowly unwinding a leveraged Aave position. A multisig with one signer is only as safe as that one key.
Private whale's Gnosis Safe multisig (Ethereum)·Ethereum·$27M stolen·Since Nov 4, 2025·
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