On the morning of June 14, many of Coinbase’s Dublin employees realised they were locked out of their work laptops. On their screen, all they could see was a pop-up with a strange error message. A line at the end of the error message asked them to check their personal inboxes at 05.00 California time. Coinbase uses Slack, a workplace messaging app. That morning, the Coinbase Slack channel for technical support buzzed with confused employees, wondering what was going on with their laptops. The emails landed in personal accounts at 13.03 Irish time. They informed staff that anyone locked out…