Do the Coldcard attacks mean all hardware wallets are now insecure?

The Coldcard entropy flaw caused a crisis of confidence in hardware wallets. Here’s the details you need to know before you entrust Ledger, Trezor or Foundation with your Bitcoin.

Just when you thought crypto market morale couldn’t sink any lower, along comes the Coldcard entropy bug to prove you wrong.

The discovery of a flaw in one of the industry’s longest-running hardware wallets last Friday serves as a stark reminder that there is no perfectly safe place to put all your Bitcoin.

Coldcard disclosed the entropy-generation flaw affecting multiple Coldcard devices on July 31. Since then, researchers at Galaxy Digital say attackers have been able to steal more than 1,596 Bitcoin worth at least $100 million through several coordinated attacks.

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