> why was this ex-admin's credentials not revoked immediately after their employment ended? Maybe they were but he'd set up time bombs. Maybe the admin was fe

> why was this ex-admin's credentials not revoked immediately after their employment ended? Maybe they were but he'd set up time bombs. Maybe the admin was fed up, knew he wanted to burn things down, wiped everything remotely and then never turned up for work and he became an ex employee in the aftermath. It's decidedly not trivial to secure your company against a malicious admin who has control of much of your infrastructure.