Coldcard Wallet Flaw Linked to $100 Million in Bitcoin Losses

Security concerns around ‘seed generation’ in hardware wallets have resurfaced after reports linked a key-generation weakness in COLDCARD to more than $100 million in losses for Bitcoin (BTC) holders, underscoring how small design trade-offs in randomness can cascade into catastrophic breaches.

According to Decrypt, the incident was traced to insufficient ‘entropy’—the amount of randomness used during seed creation—in a subset of COLDCARD devices. Seeds are the master secret from which all wallet private keys are derived; if an attacker can reconstruct the seed, they can regenerate the…  Read more

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