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An independent record of the October 2026 Binance hack
This line is our short summary of the quote below. The quote is the evidence.
Attacks on signing infrastructure, where an attacker makes an organization’s own keys sign for them, remain the largest source of losses onchain, and at Binance’s estimate of $6.3B this is the largest theft on record, more than four times the roughly $1.5B taken from Bybit in February 2025.
Blockaid's transaction security engine classified the type-4 transaction that delegated Binance 14 as malicious on sight, with the reason that an EOA was being upgraded through EIP-7702 to an untrusted address.
Blockaid’s detection flagged the drain under two minutes after the sweep and before any public report
The delegation itself was visible onchain for three minutes and 24 seconds before the sweep
The operator address, 0x7C8601d4645b93cea45F71e118A729332e6B5CA0 , was funded through three Tornado Cash withdrawals starting October 28.
Tether and Circle froze about $1.8B in the main collection address within 40 minutes, and with later freezes by other issuers and the Arbitrum Security Council, Binance puts the verified total frozen at about $3B.