Quote:
It was a message posted onto an online site that does not require a login, it referenced me specifically, as well as a class that I taught in the recently completed term (and had not taught before), it made a physical threat that was credible to the website admin, myself, the police, and my lawyer. From the website admin I obtained an IP address and a time of the posting. According to WHOIS, the IP address is part of a batch assigned to my University, and according to them the posting was made from a computer lab that does not require you to login to its workstations, that does not have someone physically present watching the room, and that only has a cardswipe to get access (and, yes, I know about tailgating).
Then there isn't much you can do to prove who it is really. Unless there was something put in beforehand (a form of forced authentication), you have no way of knowing for sure who it is and I would think (based on what happens here) that if you accuse a student of something they didn't do they may take an even stronger objection (e.g., lawsuit for deframation, slander or something else -- you probably know this better than I).