Last week's Coldcard hack was a huge blow to the Bitcoin self-custody community. For years, self-custody has been viewed as the "responsible" and "safe" way to store Bitcoin, but this incident showed that even when you follow that advice, vulnerabilities can still exist, and in this case they allowed thieves to steal users' BTC. What Happened? On Thursday (July 30, 2026), Coldcard customers began reporting that their BTC was being sent out of their wallet without their autho
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