Re: "wouldn't be common freakin' sense to not surf dodgy websites at work?"
We had one of those that didn't get fired for several years. He was the "canary" in the mine sort of. His browsing records were examined daily and new sites added to the block list. At some point he figured out to get around the block list it so IT watched and figured out how he did it and reworked the firewall. Finally layoff time came around and he was the first to go. The security department sent him a box of candy with a "thanks for all your help" note. I kind of doubt that he understood the gift.