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$38M in Bitcoin Drained by Coldcard Key Flaw Its Maker Thinks AI Found - Decrypt

Coinkite said it’s likely that an attacker used AI to review previous versions of its open source firmware to uncover a vulnerability.

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$38M in Bitcoin Drained by Coldcard Key Flaw Its Maker Thinks AI Found - Decrypt

Coldcard Mk3 firmware flaw: preprocessor guard made seed generation use weak software fallback instead of hardware RNG. Attacker drained 594 BTC (~$38M) from 500 wallets in 25 minutes; Coinkite suspects AI-assisted discovery that internal AI review missed weeks earlier. Supply-chain vulnerability for IT leaders: even trusted hardware wallets fail on design flaws; compromised seeds stay weak across all vendors, forcing costly migration and eroding vendor-trust confidence.

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venerdì 31 luglio 2026·cryptobriefing.com
Coinkite warns Coldcard Mk3 users of firmware flaw that may have compromised wallet seeds
Coinkite warns Coldcard Mk3 users that firmware versions 4.0.1 to 5.0.3 may have a random number generator flaw compromising wallet seeds.
venerdì 31 luglio 2026·cointelegraph.com
Coldcard Mk3 Warning Amid Unexplained 594 BTC Sweep
Bitcoin security experts said the unexplained $38 million wallet drain may involve flawed seed-generation entropy, though the cause and any Coldcard link remain unconfirmed.

$38M in Bitcoin Drained by Coldcard Key Flaw Its Maker Thinks AI Found - Decrypt

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$38M in Bitcoin Drained by Coldcard Key Flaw Its Maker Thinks AI Found - Decrypt

Timeline cronologica

Coinkite warns Coldcard Mk3 users of firmware flaw that may have compromised wallet seeds

Coldcard Mk3 Warning Amid Unexplained 594 BTC Sweep

Coinkite reports $38M in Bitcoin drained due to Coldcard key generation flaw

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$38M in Bitcoin Drained by Coldcard Key Flaw Its Maker Thinks AI Found - Decrypt

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