Instead of moving ETH manually from each compromised wallet, attackers now authorize contracts that automatically forward any received ETH to their own addresses.
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Ethereum Pectra Upgrade is Largely Benefitting Crypto Theft Gangs
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The mass wallet-draining attacks linked to Ethereum’s Pectra upgrade involve malicious smart contracts deployed using the EIP-7702 feature, which allows attackers to automate the theft of ETH from wallets with leaked private keys by delegating control to “sweeper” contracts that instantly transfer incoming funds to attacker-controlled addresses.
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