Who has to abide by CNSS Policies?
CNSS issuances are directed at those entities that own and/or are users of national security systems. The Heads of the Executive Departments and Agencies are responsible for ensuring that CNSS policies and directives are implemented within their departments or agencies. CNSS instructions provide guidance and technical criteria for specific IA issues. IA Advisory Memoranda or information memoranda address ad hoc issues of a general nature relating to national security systems issues. These advisories, as issued, are NOT binding upon U.S. Government departments and agencies. Contractors supporting the Executive Departments and Agencies are required to protect national security systems consistent with the CNSS requirements.