California Code, Insurance Code - INS § 1879.5

(a) Any person who believes that a violation of this article has been or is being made may notify the department immediately after discovery of the alleged violation and may send to the department, on a form and in a manner prescribed by the commissioner, the information requested and any additional information relative to the alleged violation as the department may request.  The division shall review the reports and select those alleged violations as may require further investigation.  It shall then cause an independent examination or evaluation of the facts surrounding the alleged violation to be made to determine the extent, if any, to which fraud, deceit, or intentional misrepresentation of any kind exists.

(b) No person shall be subject to civil liability for libel, violation of privacy, or otherwise by virtue of the filing of reports or furnishing of other information, in good faith and without malice, provided pursuant to this section or requested by the department as a result of the authority conferred upon it by law.

(c) The commissioner may, by regulation, require admitted insurers to keep any records and other information as he or she deems necessary for the effective enforcement of this article.