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The Binance crypto hack may have stemmed from abuse of transaction-signing infrastructure rather than a private key leak, Cointelegraph reported, citing Blockaid co-founder and CEO Ido Ben-Natan.
Ben-Natan said the attacker may have manipulated the signing system to get a malicious transaction approved without directly stealing private keys. The attacker is believed to have targeted a Binance wallet by bundling 50 EIP-7702 approval requests into a single transaction, with one of them meeting valid approval conditions and making the asset theft possible.
He added the method closely resembled the 2025 Bybit hack and also mirrored tactics associated with North Korean-linked hackers.