Bitcoin Wallet Exploit Costs Users $38 Million in 25-Minute Attack

A flaw in Coldcard hardware wallet's key generation process led to theft of 584 Bitcoin (worth around $38 million) from 500 wallets in 25 minutes.

Security researchers linked the vulnerability to how wallet seeds were generated in certain firmware versions.

Coinkite, the maker of Coldcard, acknowledged the findings.

Coinkite and Block are investigating the extent and exploitability of the issue.