National Security Agency – Declassification & Transparency

National Security Agency (foto Gifer)

Declassification & Transparency

As NSA | CSS reviews records under the Freedom of Information Act or Mandatory Declassification Review provisions of Executive Order 13526, we will make the material available to the public via the website on the Internet. In addition, NSA | CSS periodically conducts “Special Topical Reviews” of categories of records, such as the Gulf of Tonkin, USS Liberty, UK USA, and posts those records to this site. Lastly, in accordance with the federal Open Government Initiative, we will identify subjects and records for which there is a general public interest. We will meet transparency goals by reviewing those records and including them on this web page.

Declassification & Transparency Index

FOIA Reports and Releases

Historical Events, Figures and Documents

NSA Internal Periodicals and Publications

National Archives and Records Administration (NARA) Releases

Under the provisions of Executive Order 13526, Classified National Security Information, dated 29 December 2009, NSA reviews for declassification all permanently classified documents 25 years or older.

  • An index of 4,923 entries containing approximately 1.3 million pages of previously declassified documents, which have been released to NARA is provided. The documents are from the pre World War I period through the end of World War II.
  • An index of entries containing over 50,000 pages of declassified documents which have been released to NARA in April 2011 is provided. These documents cover a time frame from before World War I though the 1960s.

Visit the NARA website at

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