So many stories
I worked in a group where one prize specimen liked to watch porn at his desk next to the community fridge. We banded together and complained to management and he ... moved his desk into a storage room. He remained there, presumably happy as a clam, for the remainder of the time I was there.
Or the lab leader who asked for support and had been searching for (among other things) Miley Cyrus naked when she was well underage. He didn't successfully find any CP so he just got reported to management rather than the police. No repercussions beyond being embarrassed.
Or the visiting international researcher who called for support for his fresh new PC... He'd had it for ONE day and it was eaten up with viruses. I won't burden you with his grotesque tastes. He got reported and pretended he no longer understood English. I formatted the PC, busted him down to User and told him to never speak to me again.