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A 2021 Coldcard Firmware Flaw Is Still Draining Bitcoin Wallets

calendar_today August 4, 2026 person coinpaprika domain coinpaprika

Galaxy Research flagged a fourth wave of thefts targeting Coldcard hardware wallets, with roughly 389 Bitcoin swept from 462 addresses in hours. A 2021 firmware flaw that weakened seed randomness left the private keys guessable, and total losses now exceed $88 million.

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