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Coldcard (Coinkite)
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Coldcard flaw fuels $130M+ Bitcoin theft
5 clusters · 141 sources · last updated
Latest: Coldcard hardware wallet flaw leads to $130 million Bitcoin theft
A March 2021 firmware update for Coldcard hardware wallets reduced seed‑phrase entropy to roughly 40 bits, enabling private‑key reconstruction. At least 15 attackers have exploited the flaw in three confirmed waves, stea