Jonathan Goodman kept his 18.25 BTC on a Coldcard that had never touched the internet, locked in a safety deposit box. Between 9:36 pm and 9:43 pm on July 29, every wallet he had was emptied — about $1.6 million Canadian dollars, gone in seven minutes.

A software bug in popular hardware wallet Coldcard that led to the theft to this point of nearly 600 bitcoin worth roughly $38 million is prompting questions about security and…

Experts have since said that those holding Bitcoin on a Coldcard device should move funds now.