Worked at a bank, had content filtering. All branches had 'net access through HQ. I worked at HQ in IT. Out at a reasonably remote branch to upgrade software, walk into loan manager's office, he announces "if you see Playboy in the access logs, it wasn't me."

We didn't get notifications about that stuff. Maybe the VP of IT did, but I think it was just statistics. But we just had to check the logs when we got back to HQ. Of course he tried accessing Playboy.