Coldcard Drain: $130M Walked Out Of Wallets Nobody Touched Critical Category: Wallet Security 7 min read 2026-08-15T11:00:00+00:00 About $130M in bitcoin left offline Coldcard wallets in August 2026 with no phishing and no user error. The weak keygen theory, the RBF fee races and how to protect cold storage. Read full investigation →
