Can't we consider existing laws? any LawAnons around?
Defamation
Defamation is a statement that injures a third party's reputation. The tort of defamation includes both libel (written statements) and slander (spoken statements).
To win a defamation case, a plaintiff must show four things:
1) a false statement purporting to be fact;
2) publication or communication of that statement to a third person;
3) fault amounting to at least negligence; and
4) damages, or some harm caused to the person or entity who is the subject of the statement.
https://www.law.cornell.edu/wex/defamation