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Cointelegraph·2026-07-31 00:40
Security Risks and Vulnerabilities - Coinkite issued an alert warning that funds on Coldcard Mk3 devices running firmware versions 4.0.1 through 5.0.3 may be at risk [1] Industry Mitigations and Actions - Hardware wallet users are urged to migrate to an unaffected model or set a BIP-39 passphrase immediately [1]