Weak key generation in Coldcard firmware let an attacker drain 594 BTC ($38M) from 500 single-sig wallets. Which Mk3, Mk4, Q and Mk5 seeds are at risk.

An ongoing Coldcard Bitcoin theft has drained $38 million using weak wallet keys. The company recommends that funds be migrated immediately.

Offline wallets are supposed to be particularly secure. But if the random number generator isn't working, the seed phrase isn ...

The latest Bitcoin hack came when a flaw in Coldcard firmware silently weakened seed entropy for five years, resulting in ...

Galaxy Research said weak seed generation let an attacker recreate likely private keys offline, sweep more than 1,000 BTC ...