2023 California Code › Penal Code - PEN › PART 2 - OF CRIMINAL PROCEDURE › TITLE 12 - OF SPECIAL PROCEEDINGS OF A CRIMINAL NATURE › CHAPTER 3 - Of Search Warrants › Section 1524.3.

1524.3. (a) A provider of electronic communication service or remote computing service, as used in Chapter 121 (commencing with Section 2701) of Title 18 of the United States Code, shall disclose to a governmental prosecuting or investigating agency the name, address, local and long distance telephone toll billing records, telephone number or other subscriber number or identity, and length of service of a subscriber to or customer of that service, the types of services the subscriber or customer utilized, and the contents of communication originated by or addressed to the service provider when the governmental entity is granted a search warrant pursuant to paragraph (7) of subdivision (a) of Section 1524.
(b) The search warrant shall be limited to only that information necessary to achieve the objective of the warrant, including by specifying the target individuals or accounts, the applications or services, the types of information, and the time periods covered, as appropriate.
(c) Information obtained through the execution of a search warrant pursuant to this section that is unrelated to the objective of the warrant shall be sealed and not be subject to further review without an order from the court.
(d) (1) A governmental entity receiving subscriber records or information under this section shall provide notice to a subscriber or customer upon receipt of the requested records. The notification may be delayed by the court, in increments of 90 days, upon a showing that there is reason to believe that notification of the existence of the search warrant may have an adverse result.
(2) An “adverse result” for purposes of paragraph (1) means any of the following:
(A) Endangering the life or physical safety of an individual.
(B) Flight from prosecution.
(C) Tampering or destruction of evidence.
(D) Intimidation of a potential witness.
(E) Otherwise seriously jeopardizing an investigation or unduly delaying a trial.
(e) Upon the expiration of the period of delay for the notification, the governmental entity shall, by regular mail or email, provide a copy of the process or request and a notice, to the subscriber or customer. The notice shall accomplish all of the following:
(1) State the nature of the law enforcement inquiry with reasonable specificity.
(2) Inform the subscriber or customer that information maintained for the subscriber or customer by the service provider named in the process or request was supplied to or requested by the governmental entity, and the date upon which the information was supplied, and the request was made.
(3) Inform the subscriber or customer that notification to the subscriber or customer was delayed, and which court issued the order pursuant to which the notification was delayed.
(4) Provide a copy of the written inventory of the property that was taken that was provided to the court pursuant to Section 1537.
(f) A court issuing a search warrant pursuant to paragraph (7) of subdivision (a) of Section 1524, on a motion made promptly by the service provider, may quash or modify the warrant if the information or records requested are unusually voluminous in nature or compliance with the warrant otherwise would cause an undue burden on the provider.
(g) A provider of wire or electronic communication services or a remote computing service, upon the request of a peace officer, shall take all necessary steps to preserve records and other evidence in its possession pending the issuance of a search warrant or a request in writing and an affidavit declaring an intent to file a warrant to the provider. Records shall be retained for a period of 90 days, which shall be extended for an additional 90-day period upon a renewed request by the peace officer.
(h) No cause of action shall be brought against any provider, its officers, employees, or agents for providing information, facilities, or assistance in good faith compliance with a search warrant.
(Amended by Stats. 2015, Ch. 643, Sec. 2. (AB 1310) Effective January 1, 2016.)