Coldcard Hack Sparks Bitcoin Blockchain Message and Firmware Concerns

A recent hack of Coldcard hardware wallets has left users reeling after over 1,359 BTC was stolen. Amidst this chaos, an unusual onchain message emerged, offering laundering services to the thief for a 10% fee.

This brazen solicitation, embedded in the Bitcoin blockchain, suggests a rare direct approach to the attacker. Security experts have expressed concern about the incident's implications for hardware wallet security and self-custody confidence.

In an effort to address the vulnerability, emergency firmware updates were released to fix the issue. However, these patches have caused some wallets to become unusable, prompting users to exercise caution when updating their firmware.