COLDCARD Q
Coverage of COLDCARD Q in the Nexus archive.
- Coinkite Releases Fixed Firmware After Coldcard Bug; AI Likely Involved In The Breach
Coinkite released fixed firmware for Coldcard hardware wallets after a critical bug compromised private key generation, potentially stealing over 1,000 bitcoins. The vulnerability, likely involving AI in the breach, affected Coldcard MK3 devices with specific firmware versions. Users who did not use dice rolls or BIP 39 passphrases are at risk, and Coinkite advises firmware updates and wallet migrations to secure funds.
- Coldcard Wallet Flaw Exposes Years of Bitcoin Seeds After $70M in BTC Stolen
A firmware bug in Coldcard Wallet's Mk3 model caused weak entropy in seed generation, leading to predictable private keys and the theft of over $70 million in Bitcoin. Coinkite advised users of affected models (Mk3, Mk4, Mk5, Q) to move funds after hackers exploited the vulnerability to drain multiple addresses.
- Coinkite Launches Coldcard MK5: Major UX Upgrades to Flagship Bitcoin Hardware Wallet
Coinkite has released the Coldcard MK5, a Bitcoin hardware wallet with major user experience upgrades including a larger screen, redesigned tactile buttons, improved NFC connectivity, and a modernized chassis. The device builds on the security features of its predecessor, the MK4, while integrating technologies from the Coldcard Q.
- Airgapped signing with COLDCARD Q
The article discusses the author's experience testing the COLDCARD Q's airgapped signing feature, emphasizing the security benefits of keeping private keys fully isolated from network connections. The author seeks community feedback on the device's effectiveness.