Original research: how EIP-7702 sweeper bots, brain wallet hunters, and automated malware have permanently seized control of every predictable private key on Ethereum.

TL;DR: We systematically generated 1,800+ weak and predictable cryptocurrency private keys — BIP39 repeated-word mnemonics, brain wallets, sequential keys, developer defaults, software error codes — and checked their on-chain status across 7 blockchains. On Ethereum, 93-100% had been permanently taken over via EIP-7702 delegation by competing sweeper co…

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