Cal. Penal Code - PEN § 2947. Section 2947.
Any person who knowingly and willfully communicates to another, either orally or in writing, any statement concerning any person then or theretofore convicted of a felony, and then finally discharged, and which communication is made with the purpose and intent to deprive such person so convicted of employment, or to prevent him from procuring the same, or with the purpose and intent to extort from him any money or article of value; and any person who threatens to make any such communication with the purpose and intent to extort money or any article of value from such person so convicted of a felony is guilty of a misdemeanor.