Victims who agree to not calling the police are often given false names and insurance information or receive no information about the at - fault driver. (myvirginiainjurylawyer.com)
Certainly one gains from such an act but I don't know how to describe it as «unlawful», or to distinguish any (tenuous, surely) loss on the part of the other party from other things which are certainly not illegal such as providing false names, addresses, etc.. (law.stackexchange.com)
We think of sock - puppet reviews as those written by someone using multiple accounts set up under false names for the purposes of generating numerous positive reviews of his own work, or scathing reviews of a competitor's work. (indiesunlimited.com)