A 2021 Coldcard Firmware Flaw Just Cost Bitcoin Holders $116M
By the time researchers at Galaxy Digital had finished assessing the incident, roughly 1,816 BTC, worth close to $116 million, had been moved from more than 5,200 addresses across four separate waves. The largest of those sweeps alone took 1,082 BTC from 1,196 wallets in just 41 minutes.