^ "How to Receive and Maintain Your Security Clearance" (PDF). dami.army.pentagon.mil. Defense Security Service. Archived (PDF) from the original on October 17, 2021. Retrieved October 17, 2021.
^ Jump up to: a b "DCMA Manual 3301-08: Information Security" (PDF). Defense Contract Management Agency. Department of Defense. Archived (PDF) from the original on October 17, 2021. Retrieved October 17, 2021.
^ "Department of Defense Manual" (PDF). 2013. Archived (PDF) from the original on October 15, 2021. Retrieved October 17, 2021.
^ *"Handling Classified Information". www.wrc.noaa.gov. Archived from the original on May 27, 2010. Retrieved October 17, 2021.
"Classification & Distribution Controls". www.wrc.noaa.gov. Archived from the original on May 27, 2010. Retrieved October 17, 2021.
^ "PART 117 – National Industrial Security Program Operating Manual". Archived from the original on August 14, 2022. Retrieved October 17, 2021.
^ *"32 CFR § 117.23 – Supplement to this rule: Security Requirements for Alternative Compensatory Control Measures (ACCM), Special Access Programs (SAPs), Sensitive Compartmented Information (SCI), Restricted Data (RD), Formerly Restricted Data (FRD), Transclassified Foreign Nuclear Information (TFNI), and Naval Nuclear Propulsion Information (NNPI)". LII / Legal Information Institute. Cornell University. Archived from the original on August 14, 2022. Retrieved October 17, 2021.
"32 CFR § 117.3 – Acronyms and Definitions". LII / Legal Information Institute. Cornell University. Archived from the original on October 17, 2021. Retrieved October 17, 2021.
^ "Glossary of Security Clearance Terms". Military.com. March 13, 2019. Archived from the original on October 17, 2021. Retrieved October 17, 2021.
^ "Executive Order 12958 on Classified National Security Information". sgp.fas.org. Archived from the original on July 5, 2021. Retrieved May 14, 2016.
^ Jump up to: a b c Part 1, Sec. 1.2, "Executive Order 13526 of December 29, 2009, "Classified National Security Information"". Federal Register – U.S. National Archives and Records Administration, Vol. 75, No. 2, p. 707. January 5, 2010. Archived (PDF) from the original on April 4, 2019.
^ Jump up to: a b c "An Introduction to the Security and Classification System". Federation of American Scientists. Archived from the original on October 17, 2021. Retrieved October 17, 2021.
^ "Frequently Asked Questions- E.O. 13526 and 32 CFR Part 2001". National Archives. Information Security Oversight Office. Retrieved December 2, 2025.
^ Jump up to: a b "Security Classification of Information, volume 2 (Quist), Chapter Seven". sgp.fas.org. Archived from the original on September 17, 2021. Retrieved October 17, 2021.
^ "What's the Difference Between "Top Secret" and "Confidential"?". Slate Magazine. July 6, 2000. Archived from the original on October 17, 2021. Retrieved October 17, 2021.
^ William D. Gerhard and Henry W. Millington, "Attack on a Sigint Collector, the U.S.S. Liberty" Archived March 13, 2004, at the Wayback Machine, 1981
^ "Fiscal Year 2019 Annual Report on Security Clearance Determinations" (PDF). Office of the Director of National Intelligence (ODNI) National Counterintelligence and Security Center (NCSC). Archived (PDF) from the original on August 14, 2022. Retrieved October 17, 2021.
^ "NSA/CSS POLICY MANUAL 1-52: NSA/CSS CLASSIFICATION" (PDF). NSA. Archived (PDF) from the original on October 17, 2021. Retrieved October 17, 2021.
^ "Sensitive Compartmented Information (SCI) – Glossary | CSRC". Computer Security Resource Center (CSRC). National Institute of Standards and Technology (NIST). Archived from the original on October 17, 2021. Retrieved October 17, 2021.
^ "Controlled Access Programs" (PDF). Director of National Intelligence. Archived (PDF) from the original on October 17, 2021. Retrieved October 17, 2021.
^ Jump up to: a b CLASSIFICATION OF NUCLEAR WEAPONS-RELATED INFORMATION, http://energy.gov/sites/prod/files/hss/Classification/docs/CTI-Training-RD-FRD-Briefing.pdf Archived November 26, 2020, at the Wayback Machine
^ U.S. Department of Defense Directive DoDD 5230.24, March 18, 1987
^ Michael J. Sniffen, "Report: Gov't Secrecy Grows, Costs More"[permanent dead link], Associated Press, September 5, 2005 . Retrieved December 15, 2006.
^ "House Report 110-810 – REDUCING INFORMATION CONTROL DESIGNATIONS ACT". BACKGROUND AND NEED FOR LEGISLATION. Washington, D.C.: Congress of the United States. July 30, 2008. Archived from the original on December 12, 2012. Retrieved October 21, 2008.
^ "CUI Markings". Home. Archived from the original on March 28, 2022. Retrieved August 13, 2022.
^ Casteli, Elise (January 22, 2008). "New policy expected soon for sensitive information". Federal Times. Archived from the original on January 2, 2013.
^ "Memorandum For The Heads Of Executive Departments And Agencies – Designation and Sharing of Controlled Unclassified Information (CUI)". whitehouse.gov (Press release). May 9, 2008. Archived from the original on October 25, 2017. Retrieved October 21, 2008 – via National Archives.
^ "Archivist of the United States Establishes "Controlled Unclassified Information Office"" (Press release). The National Archives. May 22, 2008. Archived from the original on August 4, 2017. Retrieved October 21, 2008.
^ Executive Order 13556 of November 4, 2010, Controlled Unclassified Information, Federal Register – U.S. National Archives and Records Administration, Vol. 75, No. 216, November 9, 2010, p. 68675.
^ Steve, Driehaus (March 18, 2009). "Actions - H.R.1323 - 111th Congress (2009-2010): Reducing Information Control Designations Act". www.congress.gov. Archived from the original on January 9, 2015. Retrieved April 5, 2018.
^ "DoD Publications". DoD Issuances. US Department of Defense. Archived from the original on August 22, 2008. Retrieved March 26, 2012.- "DOD releases New Controlled Unclassified Information Instruction". National Defense Industrial Association. March 16, 2020. Archived from the original on October 17, 2021. Retrieved December 14, 2020.
^ "SAFEGUARDING SENSITIVE BUT UNCLASSIFIED" (PDF). Department of Homeland Security. Archived (PDF) from the original on October 25, 2021. Retrieved August 8, 2019.
^ "National Security Positions vs. Public Trust Positions". Archived from the original on November 21, 2018. Retrieved March 9, 2014.
^ "FEDERAL SECURITY/SUITABILITY CLEARANCE CHART" (PDF). Archived (PDF) from the original on May 17, 2017. Retrieved March 9, 2014.
^ Jump up to: a b "U.S. Department of State Foreign Affairs Handbook Volume 5 Handbook 3 - TAGS/Terms Handbook: 5 FAH-3 H-700 E.O. 12958, AS AMENDED, TELEGRAM CLASSIFICATION MARKING". U.S. Department of State. July 14, 2009. Archived from the original on January 14, 2016. Retrieved January 12, 2016.
^ "U.S. Intelligence Agencies Rethink Classification Policy | Secrecy NewsSecrecy News". Fas.org. April 10, 2008. Archived from the original on January 30, 2013. Retrieved July 4, 2013.
^ Obama, Barack (December 29, 2009). "Executive Order 13526- Classified National Security Information". whitehouse.gov. Archived from the original on January 26, 2017. Retrieved May 4, 2015 – via National Archives.
^ Currier, Cora (July 17, 2012). "Classified in Gitmo Trials: Detainees' Every Word". Archived from the original on September 5, 2014. Retrieved September 5, 2014.
^ Bennett, Wells (October 16, 2012). "October 16 Commission Session #3: Presumptive Classification Debated (Kinda)". www.lawfaremedia.org. Archived from the original on May 22, 2013. Retrieved September 5, 2014.
^ Kaiser, Frederick M. (May 27, 2008). "Protection of Classified Information by Congress: Practices and Proposals" (PDF). Congressional Research Service. Archived (PDF) from the original on March 11, 2015. Retrieved June 22, 2008.
^ 32 CFR 2001.90
^ Jump up to: a b "NSA Suite B Cryptography – NSA/CSS". Nsa.gov. Archived from the original on June 18, 2011. Retrieved July 4, 2013.
^ Los Alamos National Laboratory, Clearance Processing Archived October 11, 2006, at the Wayback Machine. Retrieved December 15, 2006.
^ The Football Archived April 15, 2005, at the Wayback Machine, GlobalSecurity.org
^ Selection of DoD Military and Civilian Personnel and Contractor Employees for Assignment to Presidential Support Activities (PSAs), Department of Defense Instruction No. 5210.87 (November 30, 1998).
^ *Standard Form 312 Archived June 10, 2016, at the Wayback Machine
SF 312 briefing booklet Archived January 10, 2019, at the Wayback Machine
Information Security Oversight Office (ISOO) Archived August 23, 2017, at the Wayback Machine
^ Director of Central Intelligence (June 1998). "Director of Central Intelligence Directive 1/7: Security Controls on the Dissemination of Intelligence Information". sci. Archived from the original on October 21, 2007. Retrieved September 30, 2007.
^ Jump up to: a b "Directives Division" (PDF). www.dtic.mil. Archived from the original (PDF) on March 9, 2013. Retrieved April 5, 2018.
^ United States Department of Defense (February 1995). "Department of Defense Overprint to the National Industrial Security Program" (PDF). nispom. Archived (PDF) from the original on January 7, 2016. Retrieved April 4, 2015.
^ "Security Clearance FAQs – ClearedJobs.Net". clearedjobs.net. Archived from the original on April 6, 2018. Retrieved April 5, 2018.
^ "Security Clearance Frequently Asked Questions" (PDF). Archived from the original (PDF) on January 31, 2017.
^ "GSA Clearance Verification-Passing Procedures". www.gsa.gov. Archived from the original on March 16, 2017. Retrieved April 5, 2018.
^ "Does possessing a Top Secret security clearance mean you have a TS/SCI security clearance?". DC Security Clearance Consultants. Archived from the original on November 21, 2020. Retrieved April 5, 2021.
^ "Glossary: Sensitive Compartmented Information Refresher" (PDF). cdse.edu. Archived (PDF) from the original on August 22, 2021. Retrieved April 5, 2021.
^ 5 CFR 1312.23
^ Top Level Telecommunications, The US Classification System Archived March 25, 2014, at the Wayback Machine
^ NRO Review and Redaction Guide, p. 140.
^ Ball, James (September 6, 2013). "Explaining the latest NSA revelations – Q&A with internet privacy experts". The Guardian. Archived from the original on September 7, 2013. Retrieved September 7, 2013.
^ "National Industrial Security Program Operating Manual". Fas.org. Archived from the original on March 26, 2015. Retrieved December 1, 2010.
^ "Memorandum of July 25, 2019, telephone conversation between President Donald Trump and Ukraine President Volodymyr Zelensky" (PDF). whitehouse.gov. Archived (PDF) from the original on January 20, 2021. Retrieved February 28, 2021 – via National Archives.
^ Jump up to: a b c "Agriculture-Related Pollution in the USSR". CIA. November 1977. Archived from the original on January 3, 2022. Retrieved January 18, 2010.
^ "United States Senate Committee on the Judiciary". www.judiciary.senate.gov. Archived from the original on June 24, 2020. Retrieved April 19, 2020.
^ "The Office of the Director of National Intelligence Classification Guide" (PDF). www.dni.gov. Archived (PDF) from the original on May 16, 2020. Retrieved April 20, 2020. When used, the "FISA" control marking shall be included in the banner.
^ "Semiannual Assessment of Compliance with Procedures and Guidelines Issued Pursuant to Section 702 of the Foreign Intelligence Surveillance Act, Submitted by the Attorney General and the Director of National Intelligence" (PDF). Archived (PDF) from the original on June 24, 2020. Retrieved April 20, 2020.
^ Los Alamos National Laboratory, Guide to Portion Marking Documents and Material, Appendix B, Definitions Archived October 11, 2006, at the Wayback Machine. Retrieved December 15, 2006.
^ "[no title, apparent extract from University of California laboratory security briefing]" (PDF). University of California. n.d. sigmas. Archived from the original (PDF) on September 8, 2006. Retrieved September 30, 2007.
^ See the WATERWITCH document at right for an example of a document marked REL TO USA, FVEY
^ Atomic Energy Commission's Declassification Review of Reports on Human Experiments and the Public Relations and Legal Liability Consequences Archived June 6, 2013, at the Wayback Machine, presented as evidence during the 1994 ACHRE hearings.
^ Aftergood, Steven (Spring 2008). "Classified Documents: Secrecy vs. Citizenship". Nieman Foundation for Journalism at Harvard University. Archived from the original on October 9, 2018. Retrieved April 16, 2008.
^ Monte Reel, "A Brotherhood of Spies: The U2 and the CIA's Secret War", (New York: Anchor Books, 2019), p. 71
^ Byrne, Malcolm (April 18, 2019). "Redactions: The Declassified File". Archived from the original on April 18, 2019. Retrieved April 18, 2019.
^ Past@Present blog of University of Massachusetts, Department of History, 28 Oct. 2019 "My Papers at UMass Show How Much Is Concealed From the Public, Scholars, and Congress"
^ Executive Order 13526, Sec. 5.3.
^ Executive Order 12958, Section 3.3 (h)
^ Executive Order 12958, Section 3.3 (h)(3)
General and cited sources[edit]
Information Security Oversight Office (ISOO), a component of the National Archives and Records Administration (NARA)
Policy Docs at ISOO, includes Executive Order 13526 – Classified National Security Information
Memorandum of December 29, 2009 – Implementation of Executive Order 13526, (75 FR 733)
Order of December 29, 2009 – Original Classification Authority (75 FR 735)
Implementing Directive; Final Rule ( 32 C.F.R. Part 2001, 75 FR 37254 ) ← rest of E.O. 13526 came into full effect June 25, 2010
Executive Order 12333, text at WikiSource
Executive Order 13292, text at WikiSource
Security Classified and Controlled Information: History, Status, and Emerging Management Issues, Congressional Research Service, January 2, 2008
DoD 5220.22-M National Industrial Security Program Operating Manual (NISPOM)
400 Series DOE Directives by Number The 400 series of directives is where DOE keeps most security and classification-related items.
Atomic Energy Act of 1954 42 USC 2168 – The Atomic Energy Act of 1954 at the US Nuclear Regulatory Commission
Espionage Act 18 USC 793, 794, 798
Designation and Sharing of Controlled Unclassified Information (CUI) – Presidential Memo of May 7, 2008
National Declassification Center
"Intelligence Community Classification Guidance: Findings and Recommendations Report" (PDF). Office of the Director of National Intelligence. January 2008. Archived (PDF) from the original on June 26, 2015. Retrieved April 10, 2008.
Connelly, Matthew (2023). The Declassification Engine: What History Reveals About America's Top Secrets. New York: Pantheon Books. ISBN 9781101871577. OCLC 1338303992.
Explanation of the US Classification System
Public Interest Declassification Board
Department of Justice - Freedom of Information Act
US Department of Defense - Freedom of Information Act
The National Security Archive
Open the Government.org
Federation of American Scientists
Declassified Documents from UCB Libraries GovPubs
Criminal Prohibitions on Leaks and Other Disclosures of Classified Defense Information, Stephen P. Mulligan and Jennifer K. Elsea, Congressional Research Service, March 7, 2017.
The Protection of Classified Information: The Legal Framework, Jennifer K. Elsea, Congressional Research Service, May 18, 2017.
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