California Code, Evidence Code - EVID § 1161

(a) Evidence that a victim of human trafficking, as defined in Section 236.1 of the Penal Code, has engaged in any commercial sexual act as a result of being a victim of human trafficking is inadmissible to prove the victim's criminal liability for the commercial sexual act.

(b) Evidence of sexual history or history of any commercial sexual act of a victim of human trafficking, as defined in Section 236.1 of the Penal Code, is inadmissible to attack the credibility or impeach the character of the victim in any civil or criminal proceeding.