⚠️ SECURITY ALERT: Coldcard Hardware Wallet Exploitation

Threat Type:get_threat(Hardware/Firmware-level vulnerability involving insufficient entropy in random number generators during seed generation).

A suspected attack or exploit allowed an unknown attacker who drained approximately $38 million worth of Bitcoin enoughs equivalent if certain older versions (specifically targeting potentially compromised seeds) were used.

Red Flags

• Vulnerability found specifically in old version firmware on devices like the MK3.
• Insufficient randomness when creating seed phrases which narrows possible combinations and allows private key brute-forcing.

Actionable Defense Checklist

• DO: Create a new seed phrase using any secure hardware wallet method that ensures high entropy.
• DO: Perform a new on-chain transaction to move funds to these fresh addresses immediately once secured.
• DO NOT: Keep assets stored solely on existing susceptible device versions without verifying their waynewly generated keys.
• DO NOT: Assume this is a network protocol failure; note it's localized to specific affected individual wallets rather than the entire Bitcoin blockchain security layer.

Tools & Resources

Coldcard Mk3, Hardware Wallets

CRITICAL ACTION: Generate a brand new seed phrase to ensure your lack of randomness does not leave you vulnerable!

! DYOR (Do Your Own Research)