Coldcard Vulnerability Exposes Weak Seed Generation, Drains Tens of Millions in Bitcoin
A significant security flaw in popular Bitcoin hardware wallet manufacturer Coldcard (Coinkite) came to light in late July 2026, leading to the rapid theft of substantial Bitcoin from users. The issue stemmed from a firmware bug affecting seed phrase (recovery phrase) generation on certain devices, particularly compromising the entropy and randomness needed for secure private […]
