🚨 Ankr Ethereum Bridge Hit by $304K Exploit – What Went Wrong?
Cross-chain bridges are back in the spotlight for the wrong reasons. Ankr's Ethereum bridge recently suffered a exploit resulting in a loss of ~$304,500 due to a critical signature and validation flaw.
Aquí are the key technical takeaways from the post-mortem:
🔹 The Reused Deposit Loophole: The attacker targeted a legitimate, small past deposit (roughly 0.0044 ankrETH, worth ~$11) that had already been settled. Instead of making a new deposit, they reused the old transaction reference.
🔹 Forged Receipts & Parameter Spoofing: Five forged cross-chain receipts were generated by altering recipient addresses, token types, and withdrawal amounts—draining the bridge's inventory in just 3 minutes.
🔹 The Validation Flaw: The bridge smart contract accepted the fake requests simply because they carried valid signatures from trusted consensus signers, failing to verify if the deposit event had actually occurred or been redeemed.
💡 Market Takeaway: Security architecture in cross-chain bridges still needs rigorous double-checking of state validation, not just signature verification. Stay safe out there, traders!
#Ankr #CryptoSecurity #DeFiExploit #BlockchainSecurity #Web3News
Cross-chain bridges are back in the spotlight for the wrong reasons. Ankr's Ethereum bridge recently suffered a exploit resulting in a loss of ~$304,500 due to a critical signature and validation flaw.
Aquí are the key technical takeaways from the post-mortem:
🔹 The Reused Deposit Loophole: The attacker targeted a legitimate, small past deposit (roughly 0.0044 ankrETH, worth ~$11) that had already been settled. Instead of making a new deposit, they reused the old transaction reference.
🔹 Forged Receipts & Parameter Spoofing: Five forged cross-chain receipts were generated by altering recipient addresses, token types, and withdrawal amounts—draining the bridge's inventory in just 3 minutes.
🔹 The Validation Flaw: The bridge smart contract accepted the fake requests simply because they carried valid signatures from trusted consensus signers, failing to verify if the deposit event had actually occurred or been redeemed.
💡 Market Takeaway: Security architecture in cross-chain bridges still needs rigorous double-checking of state validation, not just signature verification. Stay safe out there, traders!
#Ankr #CryptoSecurity #DeFiExploit #BlockchainSecurity #Web3News
