Cal. WIC § 827.1

(a) Notwithstanding any other provision of law, a city, county, or city and county may establish a computerized data base system within that city, county, or city and county that permits the probation department, law enforcement agencies, and school districts to access probation department, law enforcement, school district, and juvenile court information and records which are nonprivileged and where release is authorized under state or federal law or regulation, regarding minors under the jurisdiction of the juvenile court pursuant to Section 602 or for whom a program of supervision has been undertaken where a petition could otherwise be filed pursuant to Section 602.

(b) Each city, county, or city and county permitting computer access to these agencies shall develop security procedures by which unauthorized personnel cannot access data contained in the system as well as procedures or devices to secure data from unauthorized access or disclosure. The right of access granted shall not include the right to add, delete, or alter data without the written permission of the agency holding the data.