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A confirmed entropy flaw in Coldcard hardware wallets has produced a crisis of confidence across the self-custody space, one that now puts Ledger, Trezor and Foundation in scope.
Bitcoin holders are reassessing the security assumptions behind their devices. The flaw is the catalyst; the question is whether the same class of vulnerability extends beyond Coldcard's architecture.
The entropy flaw and what it means for private key security Entropy is the randomness a hardware wallet uses to generate private keys. A flaw in that randomness is not a cosmetic issue.
It means a device could produce keys that appear valid while being statistically weaker than the holder believes. That gap stays invisible until it is exploited.
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