Jameson Lopp, a blockchain security expert, is the co-founder and chief security officer of Casa, a company specializing in secure Bitcoin custody solutions

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Jameson Lopp, co-founder and chief security officer of Bitcoin secure storage firm Casa, conducted an analysis of address poisoning attacks on Bitcoin, scanning the entire blockchain and identifying 48,000 suspected attacks since 2023. Lopp identified transactions with one input and one output consisting of two different wallets with the same first four and last four characters, a strong signal of an address poisoning attack.

Jameson Lopp, the chief security officer at Bitcoin custody company Casa, sounded the alarm on Bitcoin address poisoning attacks, a social engineering scam that uses similar addresses from a victim's transaction history to fool them into sending funds to the malicious address.