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📅 Event PeriodAugust 12, 2025, 04:00 – August 17, 2025, 16:00 UTC
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Security researcher: CEX was arbitraged by MEV Bots for $300,000 due to improper interaction with 0x exchange contracts.
[Security Researcher: CEX lost $300,000 to MEV Bots due to improper interaction with 0x exchange contract] CEX's misconfiguration in interacting with the 0xProject's "swapper" contract resulted in approximately $300,000 in Token transaction fees being intercepted by MEV Bots. Venn Network's security researcher, "X" user deeberiroz, disclosed on Wednesday that the CEX interacted with the "swapper" smart contract of the decentralized peer-to-peer trading platform 0x, which was never designed for Token authorization operations. The "swapper" contract provided by 0xProject is used for executing Token exchanges. This contract is permissionless, allowing anyone to call it to perform any operation without ownership restrictions. However, it is not designed for receiving Token authorizations, as doing so could expose funds to risk. Researchers have indicated that this design has previously led to known issues, such as an incident involving the Zora airdrop on the BaseLayer2 network.