Coldcard Entropy Hack: 1,816 BTC Drained — Migrate Now
6 hours ago 7 minute read 1 comment Openlinuxlab
A bug in Coldcard firmware 4.0.1 made seed generation fall back to a weak random source, so affected wallets were created with as little as 40 bits of entropy instead of 128. Four drain waves swept roughly 1,816 BTC from more than 5,200 addresses bet...