Comment by PKop

Force the university to take reponsibility for screening their researchers. i.e. a blanket ban, scorched earth approach punishing the entire university's reputation is a good start.

People want to claim these are lone rogue researchers and good people at the university shouldn't be punished, but this is the only way you can reign in these types of rogues individuals: by getting the collective reputation of the whole university on the line to police their own people. Every action of individual researchers must be assumed to be putting the reputation of the university as a whole on the line. This is the cost of letting individuals operate within the sphere of the university.

Harsh, "over reaction" punishment is the only solution.