Coldcard Security Notice Puts Bitcoin Wallet Entropy Risk Back In Focus
A Coldcard security issue has put Bitcoin hardware-wallet safety back under the microscope after reports that a firmware flaw affected seed generation on some older device versions. According to the validated incident notes, the issue relates to Coldcard Mk3 firmware versions 4.0.1 through 5.0.3, along with Mk4 and Mk5 devices before firmware 5.6.0, and Q…