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SlowMist
@SlowMist_Team
SlowMist is a Blockchain security firm established in 2018, providing services such as security audits, security consultants, red teaming, and more.
๊ฐ€์ž… April 2018
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๐Ÿšจ SlowMist TI Alert ๐Ÿšจ ๐Ÿ’ธ @ankr Loss: ~$304.5k ๐Ÿ” Root Cause: The attacker submitted five forged cross-chain receipts referencing the same legitimate Optimism transaction, altering the recipient, token, and withdrawal amounts. All five receipts carried valid signatures from the bridge's trusted consensus signer, allowing withdraw() to release assets without independently verifying the receipts against the actual source-chain events. โš ๏ธ The origin of the unauthorized signatures remains under investigation. Signer compromise has not been confirmed. ๐Ÿ“Œ Attacker (Tx Sender): 0x9A88Dd45AE846A979705c9cFdfD0f229e592D703 ๐Ÿ“Œ Recipient: 0x119D250b82C1cf5345dF5912EFb4B1a4107a1Aa6 ๐Ÿ“Œ Vulnerable Contract: 0xc437DF90B37C1dB6657339E31BfE54627f0e7181 Powered by Attack Tx: Reused Source Tx:
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