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Block traces COLDCARD attacker to blockchain services provider after $38M Bitcoin theft

Block engineers traced the COLDCARD hardware wallet attacker to a blockchain services provider after 594 BTC was stolen from 500 wallets in 25

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cryptobriefing.comStai leggendo3 g fa

Block traces COLDCARD attacker to blockchain services provider after $38M Bitcoin theft

COLDCARD firmware v4.0.0 bug disabled hardware RNG, making seeds predictable; $38M stolen in 25 minutes on July 30. Five-year lag before exploitation reveals firmware supply-chain vulnerability; cold-storage users with Mk3/older must regenerate seeds now.

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venerdì 31 luglio 2026·coindesk.com
Major bitcoin wallet flaw drains 594 BTC in 25-minute sweep
A hardware wallet randomness bug turned “impossible to guess” seeds into guessable ones, and $38 million is already gone.
venerdì 31 luglio 2026·decrypt.co
$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.

Block traces COLDCARD attacker to blockchain services provider after $38M Bitcoin theft

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Block traces COLDCARD attacker to blockchain services provider after $38M Bitcoin theft

Timeline cronologica

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