A zillion years ago, I had a contract position at Disney. But I was a temp worker, so they didn't give me a desk. Or a phone. Or a PC to use. Or any official way to check my e-mail. But somehow they DID give me Forest Admin credentials for their ENTIRE Active Directory.
I was there for six months and when the full time replacement admin finally showed up, they had armed guards escort me out. My replacement let me know after the fact that someone done fucked up setting up my user account. I could've fucked the entire company, so I the order was given that I be treated as hostile until I left the premises. Why they didn't just, I don't know, select and delete the group memberships my account wasn't supposed have, I do not know.
Last year some IT worker at Disney got in a lot of legal trouble by using his still-active credentials to make tiny changes to the printed menus used on Disney Cruise ships. He apparently thought investigations into how that happened would eventually lead to getting his job back, but honestly ruining a print run or three of menus is probably about the most malicious thing I would've guessed WOULDN'T get LEOs to your door. It's just nice to know Disney's IT hasn't gotten any better since I worked there.