Security
Coldcard wallet breach drains $130M in Bitcoin from 7,300 devices
The Cryptonomist·August 7, 2026·1 min read
The Coldcard wallet breach, caused by a firmware flaw introduced in March 2021, drained over $130 million in Bitcoin from 7,300 supposedly secure devices. The incident is one of 2026's costliest cryptocurrency thefts, exploiting a hardware wallet designed to keep Bitcoin offline and out of reach of hackers.
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