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James Van Straten
2 months, 2 weeks ago

Swan Bitcoin CEO Cory Klippsten sees users embracing stronger safeguards after $100 million Coldcard exploit

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Cory Klippsten was at a wedding in Paris when the messages started coming in.

"It was a brutal weekend for so many who lost bitcoin," the CEO of Swan said in an interview. "I was sending messages at 4 a.m. to help someone on Pacific Time get their coins to safety."

That was last Thursday, when attackers began draining bitcoin from thousands of Coldcard hardware wallets, exploiting a firmware flaw that had sat undetected for five years.

A defect in a March 2021 firmware update for the Coinkite-made wallet left users with private keys that were less secure than they should have been. By the time three waves of attack had rolled through, almost 1,600 BTC valued at over $100 million had been swept from around 7,300 addresses, according to Galaxy Research.

Swan, a U.S.-based platform that helps individuals buy, hold and self-custody bitcoin, paused withdrawals for at-risk clients, shipped in-app warnings and opened its migration support well beyond its user base.

"Our team dropped everything to start calling clients, and then we opened it up to anyone who needed help, whether they had ever been a Swan client or not," Klippsten said.
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