@deeberiroz: critical backdoor in thousands of smart contracts

We @VennBuild just discovered a critical backdoor on thousands of smart contracts leaving over $10,000,000 at risk for months Along with the help of security researchers @dedaub @pcaversaccio, the seals team @seal_911 and others, we managed to rescue the majority of funds before the attacker could make their move. This is the story of how a sophisticated attacker (cough Lazarus) put backdoors in thousands of contracts and ALMOST got away with it 🧵