Coldcard Exploit Puts Bitcoin Security Under Fire

Coldcard maker Coinkite has issued warnings about a potential exploit linked to weak seed generation entropy on certain firmware versions. Air gapped hardware wallets are widely viewed as the gold standard for protecting long term Bitcoin holdings because they never connect to the internet. Recent developments have challenged that assumption.

While official details continue to emerge, secondary reports suggest that affected users may have lost up to $114 million in funds. The issue apparently stems from how randomness was generated during the initial setup process on specific firmware builds, potentially allowing attackers to recreate private keys.

Traders and long term holders should check their firmware versions immediately and follow official guidance from Coinkite. This incident serves as a sharp reminder that physical hardware devices still require careful setup, proper updates, and ongoing vigilance to keep funds safe.