Hackers exploited a Coldcard software flaw to steal $86 million in Bitcoin from over 4,500 cold wallets, raising fresh concerns about crypto security.

Coinkite disclosed a Coldcard firmware flaw dating to 2021 that let an attacker drain 594 BTC worth $38M from nearly 500 wallets in under 30

Over $70 million in Bitcoin has been pinched. Coldcard has since urged its users to take precautions.