When I worked at an unnamed place one might compare to MS, corporate filter would block work-related stuff all the time. Usually it would evoke laughs from people nearby when someone would trigger the block page. Most legit stuff blocked was under “hacking”, which is precisely what my work-related task would entail. It would be less hacky with better docs, but you work with what you got.
Getting around it was trivial. Couldn’t send perl scripts through email either, so you’d just name your file “virus.txt” to send it through.