Blockchain security firm Wintermute has highlighted a major abuse of Ethereum Improvement Proposal (EIP) 7702, introduced after the Ethereum Pectra upgrade last month. In principle, EIP-7702 allows wallets to mimic smart contracts temporarily, allowing actions like transaction batching, sponsoring gas fees, and adding spending controls.
However, Wintermute reported that more than 80% of EIP-7702 delegations are linked to automated “sweeper” contracts that drain wallets with compromised private keys. Dubbed “CrimeEnjoyor”, this malicious contract includes a copy-paste code that is responsible for draining most of these wallets. Later, these bots sweep funds from affected wallets, transferring ETH
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