#coldcard Tech News.
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Bitcoin held near $64,300 while South Korea's Kospi surged 17%, led by Samsung, SK Hynix, and Taiwan Semiconductor. A Coldcard wallet flaw drained 594 bitcoin worth $38 million from 500 wallets without moving prices. Ether traded at $1,907, BNB rose 3% to $590.
An attacker exploited a Coldcard key-generation flaw to steal roughly 594 bitcoin, worth about $38 million, from around 500 single-signature wallets in under 30 minutes. Coinkite warned Mk3 users running firmware 4.0.1 or later, while Mk4, Q and Mk5 appear unaffected.
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