The FCC has filed notice against a pair of brainiacs accused of using spoofing services to allegedly make harassing phone calls to the ex-wife of one of the men.

Spoofing — the practice of sending out fake caller ID information to disguise the caller’s real identity — is legal, so long as it’s not done to deceive or harm anyone. Reporters, victims of domestic abuse, human rights organizations, all legally use spoofing to protect their locations or sources. 

This sort of trickery is definitely not allowed when it’s deployed just to make harassing phone calls to your ex.