Coldcard users face urgent seed migration warning

Dogecoin community contributor Mishaboar urged Coldcard users on Aug. 1 to move their Bitcoin to wallets controlled by newly generated seed phrases. Summary 1,367.05 BTC worth $88.6 million was drained from 4,585 addresses across three suspected attack waves. Coinkite says firmware updates protect new seeds but cannot repair seed phrases from vulnerable versions. Mishaboar advised users never to reuse affected seeds or enter recovery phrases into computers online. The warning followed Galaxy Research’s estimate that three suspected attack waves drained 1,367.05 BTC, worth about $88.6 million, from 4,585 addresses. Mishaboar wrote, “If you have ever used a COLDCARD device of any kind, migrate your funds to a new wallet immediately.” He also warned users not to reuse their existing Coldcard seed phrase or enter recovery words into an internet-connected computer. However, his reference to every Coldcard device is broader than Coinkite’s official security advisory, which identifies specific firmware versions and several exceptions. If you have ever used a COLDCARD device of any kind, migrate your funds to a new wallet immediately.IMPORTANT: DO NOT reuse the COLDCARD seed phrase ever ag...