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Bitcoin cold wallet hack exposes five-year-old firmware flaw, drains $114M from Coldcard devices

A five-year-old firmware flaw in Coinkite's Coldcard wallets has led to the theft of 1,816 BTC (~$114M), raising serious questions about Bitcoin

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Bitcoin cold wallet hack exposes five-year-old firmware flaw, drains $114M from Coldcard devices

Coldcard's 2021 firmware reduced seed entropy to 40 bits, draining 1,816 BTC ($114M) from 5,200+ wallets. Enterprise Bitcoin strategies must pivot toward regulated custodians and ETFs; DIY hardware wallets carry unacceptable key-generation risk.

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martedì 4 agosto 2026·news.bitcoin.com
The Coldcard Hack Just Hit $116 Million. A Fourth Wave Is Still Draining
The Coldcard hardware wallet hack has grown to $116 million across four waves, with Galaxy Research tracking sweep rates 45x above baseline.
martedì 4 agosto 2026·cryptobriefing.com
Bitcoin self-custody at risk after Coldcard exploit drains over $83 million
A Coldcard firmware bug generated weak seeds since 2021, enabling theft of over 1,300 BTC worth $83M. CasaHODL CTO Lopp weighs in on self-custody

Bitcoin cold wallet hack exposes five-year-old firmware flaw, drains $114M from Coldcard devices

Confronto fonti

Bitcoin cold wallet hack exposes five-year-old firmware flaw, drains $114M from Coldcard devices

Timeline cronologica

The Coldcard Hack Just Hit $116 Million. A Fourth Wave Is Still Draining

Bitcoin self-custody at risk after Coldcard exploit drains over $83 million

BTC news: Coldcard urges users to move bitcoin as active wallet exploit continues

Hackers steal over $130 million by exploiting bug in offline hardware wallets | TechCrunch

Hackers steal over $130M in cryptocurrency from offline hardware wallets

Coldcard Bitcoin Exploit Explained: Entropy, How Keys Are Generated, and Why Bits Matter - Decrypt

The Coldcard Hack Just Hit $116 Million. A Fourth Wave Is Still Draining

BTC news: Coldcard urges users to move bitcoin as active wallet exploit continues

Coldcard hack may accelerate migration to ETFs as safer option

Hackers steal over $130 million by exploiting bug in offline hardware wallets | TechCrunch

Coldcard Bitcoin Exploit Explained: Entropy, How Keys Are Generated, and Why Bits Matter - Decrypt

What we know about ongoing Coldcard hack that's stolen over $100M worth of bitcoin | CBC News

Coldcard Bitcoin exploit explained: How a firmware bug turned entropy into a ticking time bomb

Hackers steal over $130M in cryptocurrency from offline hardware wallets

Coinkite declines to estimate Bitcoin loss from $130M Coldcard hack

Bitcoin cold wallet hack exposes five-year-old firmware flaw, drains $114M from Coldcard devices

Galaxy Digital analyzes Coldcard hack as losses climb past $111M