Cal. INS § 1872.51

(a) An agent or broker who furnishes written or oral information pursuant to Section 1872.41, or an authorized governmental agency, or its employees, that furnishes or receives written or oral information pursuant to Section 1872.41 or assists in an investigation of a suspected insurance fraud violation conducted by an authorized governmental agency, shall not be subject to any civil liability in a cause or action if the insurer, authorized agent, agent or broker, or authorized governmental agency acted in good faith, without malice, and reasonably believes that the action taken was warranted by the then-known facts, obtained by reasonable efforts.

(b) This chapter does not abrogate or lessen the existing common law or statutory privileges and immunities of an insurer, agent authorized by that insurer to act on its behalf, agent or broker, licensed rating organization, or any authorized governmental agency or its employees.