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Aztec Network Suffers Attack, Loses Over $2.15 Million, Root Cause Linked to ZK Proof-L1 Settlement Mismatch

2 hours ago

June 15: Per analysis from BlockSec Phalcon (@Phalcon_xyz), Aztec Network’s RollupProcessorV3 contract suffered an exploit resulting in losses exceeding $2.15 million. The root cause lies in numRealTxs not being properly linked to the transaction set enforced by the ZK proof, creating a mismatch between the proof verification process and how L1 settlement logic interprets the transaction list. The attacker exploited this vulnerability to shift valid deposits to slots unprocessed by settlement logic, bypassing the decreasePendingDepositBalance() function to generate unsecured private balances out of nothing, then extracted these funds via standard settlement procedures—with a total of seven assets involved in the incident.
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Binance Alpha will list o1exchange (O) on June 17th

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