Cal. Civ. Code § 3426.11
Notwithstanding subdivision (b) of Section 47, in any legislative or judicial proceeding, or in any other official proceeding authorized by law, or in the initiation or course of any other proceeding authorized by law and reviewable pursuant to Chapter 2 (commencing with Section 1084) of Title 1 of Part 3 of the Code of Civil Procedure, the voluntary, intentional disclosure of trade secret information, unauthorized by its owner, to a competitor or potential competitor of the owner of the trade secret information or the agent or representative of such a competitor or potential competitor is not privileged and is not a privileged communication for purposes of Part 2 (commencing with Section 43) of Division 1.
This section does not in any manner limit, restrict, impair, or otherwise modify either the application of the other subdivisions of Section 47 to the conduct to which this section applies or the court's authority to control, order, or permit access to evidence in any case before it.
Nothing in this section shall be construed to limit, restrict, or otherwise impair, the capacity of persons employed by public entities to report improper government activity, as defined in Section 10542 of the Government Code, or the capacity of private persons to report improper activities of a private business.
Ca. Civ. Code § 3426.11