Maybe this is what US "Homeland Security" should take care of . Form a couple of assassination squads . Track them down & take care of them . I don't care if this violates any laws in the country the cybercriminals are operating from. Let that country do something before a US HS Hit squad gets there.
Problem is the US has a President without balls . So it's not going to happen. Homeland Security is too busy harassing US citizens.
My solution may seem harsh but I see no other one that might work.