Oppressive governments, hateful organizations or individuals could embed cookies or tracking technology to geo-locate visitors to sites that meet a certain profile.
Scam artists can set up fake accounts through which to operate.
Hook-up sites that lead members to quick meetings and random liaisons can be used to target people for hate crimes.
A form of catfishing, fake users meet their victims online and then lure them to an isolated location.
Symantec reported as recently as summer 2016 there were a minimum of 13 fake or cloned sites perpetrating the same dating site scams; fake verification.