1Committee on National Security Systems.CNSS Policy No.18,"National Policy on Classified Information Spillage,"[EB/OL].http://www.cnss.gov,2009.12.
2THE WHITE HOUSE Office of the Press Secretary.Executive Order 12958,"Classified National Security Information," as amended[EB/OL].http://www.archives.gov/,2009.12.
3Information Security Oversight Office."Classified National Security Information," (Directive No.1)[EB/OL].http://www.archives.gov/,2009.12.
4Committee on National Security Systems.CNSS Instruction No.4009,"National Information Assurance (IA) Glossary"[EB/OL].http://www.cnss.gov,2009.12.
