Dossier
BIP 39
Coverage of BIP 39 in the Nexus archive.
- COLDCARD SECURITY RISK: IMMEDIATE ACTION REQUIRED
Coldcard wallets (MK3, MK4, MK5, Q) have a critical security vulnerability allowing attackers to brute-force seed phrases if generated without sufficient entropy (e.g., 50+ dice rolls). Funds are actively being drained, with 1000 BTC reported moved. Immediate action is required to move funds to secure wallets, use passphrases, or adopt alternatives like Nunchuck.