The Protective Security Manual (PSM), published by NZSIS, is a consolidation of SIGS, Protective Security Supplements and a Catalogue of Approved Security Equipment for the information of government departments and agencies. The Supplements flesh out the policy stated in SIGS and provides stand alone advice on issues not included in SIGS. The Catalogue is a living document detailing security products approved by NZSIS for use in the protection of classified hard copy information and equipment. The Supplements and Catalogue are classified and not available to the general public.