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Coldcard wallet exploit leads to theft of over 1,778 Bitcoin worth $112M

A 2021 firmware bug in Coldcard hardware wallets let attackers steal over 1,778 BTC worth $112M in the largest hardware wallet breach of 2026.

Raccontata da

theblock.co

decrypt.co

cryptobriefing.com

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AI · summaries

cryptobriefing.comStai leggendo2 h fa

Coldcard wallet exploit leads to theft of over 1,778 Bitcoin worth $112M

Coldcard firmware bug (2021) replaced hardware RNG with predictable PRNG; thieves stole 1,778 BTC ($112M) starting July 30. Firmware-level breach undermines self-custody security—users must regenerate seeds on patched firmware, exposing vendor gaps in RNG validation and patch response time.

originale

theblock.co3 g fa

New Bitcoin addresses jump as Coldcard exploit pushes users to move funds

Coldcard hardware wallet users lost ~$116M due to a 2021 firmware RNG bug, spurring wallet migrations. The exploit reveals implementation risk in self-custody, forcing managers to reconsider the tradeoff between decentralization and security when evaluating wallet strategies.

Timeline cronologica

martedì 11 agosto 2026·theblock.co
New Bitcoin addresses jump as Coldcard exploit pushes users to move funds
The number of new Bitcoin addresses climbed from 260,000 to 330,000, a sharp break from the decline that has held for most of the year.
mercoledì 12 agosto 2026·decrypt.co
After Coldcard Was Hacked, $15 Billion in Bitcoin Moved to Safety - Decrypt
Casa CEO Nick Neuman says the mass Bitcoin migration after the $130M Coldcard exploit proves distributed self-custody is not a vulnerability.

Coldcard wallet exploit leads to theft of over 1,778 Bitcoin worth $112M

New Bitcoin addresses jump as Coldcard exploit pushes users to move funds

Timeline cronologica

New Bitcoin addresses jump as Coldcard exploit pushes users to move funds

After Coldcard Was Hacked, $15 Billion in Bitcoin Moved to Safety - Decrypt

After Coldcard Was Hacked, $15 Billion in Bitcoin Moved to Safety - Decrypt

Coldcard wallet exploit leads to theft of over 1,778 Bitcoin worth $112M