Deep Tide TechFlow News, Nov. 9 — According to monitoring by SlowMist, an attack on the Ankr cross-chain bridge caused losses of approximately $304,500. The attacker referenced the same legitimate Optimism transaction to submit five forged cross-chain receipts, modifying the recipient, token, and withdrawal amount.
SlowMist said all five receipts carried valid signatures from trusted cross-chain bridge consensus signers. The withdrawal function released the assets without independently verifying the actual events on the source chain. The source of the unauthorized signatures is still under investigation, and it has not yet been confirmed that any signers were compromised.
Reminder: If you have authorized the relevant contracts, check and revoke those approvals as soon as possible.
$ANKR $OP #安全事件
SlowMist said all five receipts carried valid signatures from trusted cross-chain bridge consensus signers. The withdrawal function released the assets without independently verifying the actual events on the source chain. The source of the unauthorized signatures is still under investigation, and it has not yet been confirmed that any signers were compromised.
Reminder: If you have authorized the relevant contracts, check and revoke those approvals as soon as possible.
$ANKR $OP #安全事件
