COLDCARD(@COLDCARDwallet):COLDCARD Mk3 Security Advisory If you generated a seed on a Mk3 after firmware 4.0.1, your funds may be at risk. Mk4, Q and Mk5 are not affected based on our early analysis. Read the advisory and migrate carefully:

COLDCARD

@COLDCARDwallet

SECURITY ADVISORY ⚠️ check blogpost | The best #bitcoin# hardware wallet 🙌 Ultra-secure.The only dedicated air-gapped. Backup on SEEDPLATE from @Coinkite

Joined December 2017

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COLDCARD@COLDCARDwallet

2026.07.30 22:50

COLDCARD Mk3 Security Advisory If you generated a seed on a Mk3 after firmware 4.0.1, your funds may be at risk. Mk4, Q and Mk5 are not affected based on our early analysis. Read the advisory and migrate carefully: