Mixin highlights self-custody risks after COLDCARD entropy incident

Aug. 6, 2026

Hong Kong, China, August 6th, 2026, Chainwire

Mixin Safe, a multisignature self-custody product developed by Mixin, enables users to manage their Owner Key with a hardware wallet and combines MPC and timelock mechanisms in a layered security architecture.

Mixin highlighted how the recently disclosed COLDCARD random number generation issue has renewed industry attention on the security of hardware wallet key generation.

According to a technical report published by COLDCARD manufacturer Coinkite, certain affected firmware versions did not use the intended hardware random number generation path when creating wallet seeds, resulting in an effective search space below the original security target.