[jimmyspice]

You could just do that anyway. I've seen spam email trying to extort people threatening to release indecent images of them (that they don't have. supposedly, they've been captured from the victims selfie cam).

In this case, you don't have to be accurate, you're just trying to call someones bluff, in the small case they've actually done said thing (and in addition believe you can prove it AND that payment will silence them)