Got threatened that my IP address would be traced and I don't know if they're bluffing

I anonymously reported a teacher to our dean for making sexually suggestive comments in class repeatedly. He was given a warning and confronted our whole class, saying that he would hire someone to trace the sender's IP address and sue for cyber libel.



I made the report under a new account on Skype and did not include any personal information.



Is he bluffing? Is this possible?

address class comments cyber don hire ip address making privacy trace warning