Cal. Penal Code § 11105.4
(e) As used in this section, “contract security organization” means a person, business, or organization licensed to provide services as a private patrol operator, as defined in subdivision (a) of Section 7582.1 of the Business and Professions Code.
As used in this section, “proprietary security organization” means an organization within a business entity that has the primary responsibility of protecting the employees and property of its employer, and which allocates a substantial part of its annual budget to providing security and protective services for its employer, including providing qualifying and in-service training to members of the organization.