I'm sorry, but after all the tech support jobs I've been at, someone is going to search for *.jpg/gif/png/whatever.
I never have myself, but at every job I've been at, a bored nerd is going to do a random search for pics/porn. It takes 30 seconds when they are spending hours on a computer.
These days, I work for a company that has a long disclosure that people ignore while I read it to them, but the big thing is "if you have shit you don't want us seeing, make a second account with a password that we can use to fix your shit."
Again, I have never done it myself, but I have seen so many colleagues do it that I can only assume it's common over all areas.