Hackers have found a software flaw in a brand of “cold” Bitcoin wallet, considered one of the safest places to store cryptocurrency and are siphoning tens of millions of dollars in an ongoing attack.
Late last week, Canada-based Coinkite Inc. notified users of its Coldcard devices that a security flaw in the keys that protect their Bitcoin had compromised some wallets. By Monday, roughly 1,367 of the tokens worth some $86 million had been drained from more than 4,500 wallets, according to Galaxy Research.
