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Classified information in the United States
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The United States government classification system is established under Executive Order 13526, the latest in a long series of executive orders on the topic of classified information beginning in 1951. Issued by President Barack Obama in 2009, Executive Order 13526 replaced earlier executive orders on the topic and modified the regulations codified to 32 C.F.R. 2001. It lays out the system of classification, declassification, and handling of national security information generated by the U.S. government and its employees and contractors, as well as information received from other governments.
An example of a U.S. classified document; page 13 of a United States National Security Agency report on the USS Liberty incident, partially declassifi
An example of a U.S. classified document; page 13 of a United States National Security Agency report on the USS Liberty incident, partially declassified and released to the public in July 2003. The original overall classification of the page, "Top Secret" code word UMBRA, is shown at top and bottom. The classification of individual paragraphs and reference titles is shown in parentheses—there are six different levels on this page alone. Notations with leader lines at top and bottom cite statutory authority for not declassifying certain sections.
A GSA-approved security container
A GSA-approved security container
Classified documents with and without cover sheets found by the Federal Bureau of Investigation during its search of Mar-a-Lago in August 2022.
Classified documents with and without cover sheets found by the Federal Bureau of Investigation during its search of Mar-a-Lago in August 2022.
A cover sheet for information protected by the BYEMAN control system
A cover sheet for information protected by the BYEMAN control system
Classified information
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Classified information is material that a government body deems to be sensitive information that must be protected. Access is restricted by law or regulation to particular groups of people with the necessary security clearance and need to know. Mishandling of the material can incur criminal penalties.
A typical classified document. Page 13 of a U.S. National Security Agency report on the USS Liberty incident, partially declassified and released to t
A typical classified document. Page 13 of a U.S. National Security Agency report on the USS Liberty incident, partially declassified and released to the public in July 2004. The original overall classification of the page, "top secret", and the Special Intelligence code word "umbra", are shown at top and bottom. The classification of individual paragraphs and reference titles is shown in parentheses—there are six different levels on this page alone. Notations with leader lines at top and bottom cite statutory authority for not declassifying certain sections.
KGB's "List of traitors to the Motherland, agents of foreign intelligence, and other wanted state criminals" (1979) seen in the Museum of Genocide Vic
KGB's "List of traitors to the Motherland, agents of foreign intelligence, and other wanted state criminals" (1979) seen in the Museum of Genocide Victims, Vilnius: originally marked top secret
Facsimile of the cover page from an East German operation manual for the M-125 Fialka cipher machine. The underlined classification markings can be tr
Facsimile of the cover page from an East German operation manual for the M-125 Fialka cipher machine. The underlined classification markings can be translated as "Cryptologic material! Secret restricted material" de:Verschlusssache.
A building in Wuhan housing provincial offices for dealing with foreign countries, etc. The red slogan says, "Protection of national secrets is a duty
A building in Wuhan housing provincial offices for dealing with foreign countries, etc. The red slogan says, "Protection of national secrets is a duty of every citizen".