Coldcard Firmware Flaw Prompts Push for Multisig Security in Crypto Self-Custody

A security breach targeting Coldcard, a popular hardware cryptocurrency wallet, revealed a firmware vulnerability that had gone undetected for five years. The hack has drawn significant attention from the self-custody community and industry stakeholders. In response, the industry moved quickly to address the flaw and reassess existing security practices. The incident is now accelerating broader adoption of collaborative multisig security solutions, which require multiple approvals before transactions are authorized.