"...the only person on the whole campus connecting to Tor."

Talk about doubly stupid, first sending the threat, second using Tor on campus. I often wonder what goes (or doesn't go) through the mind of such people.

There were 4 people, but he confessed when questioned.

I guess the lesson there is that if you don't want to be convicted of a crime, don't confess to a crime? They won't give you a lighter sentence for confessing.