Your Hardware Wallet Seed Can Be Guessed: 40 Bits, Not 128
Published August 15, 2026
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For five years Coldcard hardware wallets generated seeds with about 40 bits of entropy instead of 128. That is brute forceable on ordinary hardware ā no physical access, no phishing, no mistake by the owner. Updating the firmware does not repair a seed that already exists. Manufacturer advisory: https://blog.coinkite.ā¦
- Published
- August 15, 2026
- Made for kids
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More features coming
We're working on new analytics and tools. Stay tuned.