Civ. Code, § 48.9

(a) An organization which sponsors or conducts an anonymous witness program, and its employees and agents, shall not be liable in a civil action for damages resulting from its receipt of information regarding possible criminal activity or from dissemination of that information to a law enforcement agency.

(b) The immunity provided by this section shall apply to any civil action for damages, including, but not limited to, a defamation action or an action for damages resulting from retaliation against a person who provided information.

(c) The immunity provided by this section shall not apply in any of the following instances:

(1) The information was disseminated with actual knowledge that it was false.

(2) The name of the provider of the information was disseminated without that person’s authorization and the dissemination was not required by law.

(3) The name of the provider of information was obtained and the provider was not informed by the organization that the disclosure of his or her name may be required by law.

(d) As used in this section, an “anonymous witness program” means a program whereby information relating to alleged criminal activity is received from persons, whose names are not released without their authorization unless required by law, and disseminated to law enforcement agencies.