Some people engage in scam baiting, which is intentionally wasting time of scammers so that said scammers aren't spending their time actually scamming real victims.
Is this allowed? It involves a lot of deception, and may be considered bittul zman. There will likely also be a Jewish take on how one should treat them even though they are a scammer.
Not sure what else could be related, but it would be interesting to see answers to whether scam baiting is allowed.