Losses Top $115M In Coldcard Bitcoin Hack: Galaxy Research

NewsMon, 17 Aug 2026 21:32:34 UTC1 hour ago

Bitcoin Magazine

Losses Top $115M In Coldcard Bitcoin Hack: Galaxy Research

New data from Galaxy Research shows that $115 million in bitcoin has been lost in the Coldcard theft.

Writing on X Sunday, Galaxy Research said that it had spoken with over 200 victims to support them and gather intelligence on the attackers.

The figures are based on the price of bitcoin at the time of the attack.

Coldcard losses have exceeded $115M (based on the price when coins were stolen)

Galaxy Research has spoken with 200+ victims to support them and gather intelligence on the attackers

This thread contains additional charts and info pic.twitter.com/H2K141mugF
- Galaxy Research (@glxyresearch) August 16, 2026

Hackers started taking bitcoin stored using Coinkite’s popular Coldcard hardware wallet on July 31.

Canadian company Coinkite said that a firmware bug in Coldcard Mk3 devices — starting with version 4.0.1 in March 2021 — caused seed generation to fall back to a weak software Pseudorandom Number Generator instead of the hardware true random number generator, allowing hackers to essentially guess investor seedphrases.

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Losses Top $115M In Coldcard Bitcoin Hack: Galaxy Research

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