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COLDCARD wallet RNG flaw likely linked to $88 million Bitcoin theft

August 2, 2026 · BleepingComputer · Severity: HIGH

A vulnerability in COLDCARD hardware wallet firmware allowed attackers to steal an estimated $88.6 million in Bitcoin from thousands of wallets whose seeds were generated using a flawed random number generator.

Key Takeaways

  • A vulnerability in COLDCARD hardware wallet firmware allowed attackers to steal an estimated $88.6 million in.
  • A vulnerability in COLDCARD hardware wallet firmware allowed attackers to steal an estimated $88.6 million in Bitcoin from thousands of wallets whose seeds were generated using a flawed random number generator.
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