How would a Camarilla prince punish the Nosferatu in their city?

My players have recently uncovered a plot among the city's Nosferatu that involves covering for and harboring someone among their clan who has been working as a double agent for the anarchs. They intend to expose this to the Sheriff and Prince. So I wonder, how would a Prince react to this situation and how could they inflict collective punishment without completely crippling the usefulness the Nos can provide or attracting justicar scrutiny?