Cal. Penal Code § 641

Every person who, by the payment or promise of any bribe, inducement, or reward, procures or attempts to procure any telegraph or telephone agent, operator, or employee to disclose any private message, or the contents, purport, substance, or meaning thereof, or offers to any agent, operator, or employee any bribe, compensation, or reward for the disclosure of any private information received by him or her by reason of his or her trust as agent, operator, or employee, or uses or attempts to use any information so obtained, is punishable as provided in Section 639.