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HARDWARE-WALLET news

Curated crypto headlines with the on-chain context most tools skip. Written by the team behind Koinlytics.
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A 2021 Firmware Bug Just Cost Coldcard Users 594 BTC in a 25 Minute Sweep

A build setting introduced in Coldcard firmware 4.0.0 back in March 2021 quietly turned hardware seeds into guessable ones, and attackers drained 594 BTC (about $38 million) in a single 25 minute window.

BTChackbitcoinJul 31, 2026

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