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  2. Classified information in the United States - Wikipedia

    en.wikipedia.org/wiki/Classified_information_in...

    Information that is unclassified but which the government does not believe should be subject to Freedom of Information Act requests is often classified as Controlled Unclassified Information (CUI). In addition to CUI classification, information can be categorized according to its availability to be distributed, e.g., Distribution D may only be ...

  3. Classified information - Wikipedia

    en.wikipedia.org/wiki/Classified_information

    A typical classified document. Page 13 of a U.S. National Security Agency report [1] 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.

  4. List of U.S. security clearance terms - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._security...

    Material that is classified as Unclassified // For Official Use Only (U//FOUO) is considered between Unclassified and Confidential and may deal with employee data. [ citation needed ] For access to information at a given classification level, individuals must have been granted access by the sponsoring government organization at that or a higher ...

  5. Government Security Classifications Policy - Wikipedia

    en.wikipedia.org/wiki/Government_Security...

    "Unclassified" is deliberately omitted from the new model. Government bodies are not expected to automatically remark existing data, so there may be cases where organisations working under the new system still handle some data marked according to the old system. Information Asset Owners continue to be responsible for information.

  6. United States security clearance - Wikipedia

    en.wikipedia.org/wiki/United_States_security...

    Anyone with access to classified data requires a clearance at or higher than the level at which the data is classified. For this reason, security clearances are required for a wide range of jobs, from senior management to janitorial. According to a 2013 Washington Post article, over 3.6 million Americans had top-secret clearances; almost one ...

  7. NSA cryptography - Wikipedia

    en.wikipedia.org/wiki/NSA_Cryptography

    A Type 1 Product refers to an NSA endorsed classified or controlled cryptographic item for classified or sensitive U.S. government information, including cryptographic equipment, assembly or component classified or certified by NSA for encrypting and decrypting classified and sensitive national security information when appropriately keyed.

  8. System high mode - Wikipedia

    en.wikipedia.org/wiki/System_High_Mode

    System high mode, or simply system high, is a security mode of using an automated information system (AIS) that pertains to an environment that contains restricted data that is classified in a hierarchical scheme, such as Top Secret, Secret and Unclassified. System high pertains to the IA features of information processed, and specifically not ...

  9. NSA Suite B Cryptography - Wikipedia

    en.wikipedia.org/wiki/NSA_Suite_B_Cryptography

    It was to serve as an interoperable cryptographic base for both unclassified information and most classified information. Suite B was announced on 16 February 2005. A corresponding set of unpublished algorithms, Suite A, is "used in applications where Suite B may not be appropriate. Both Suite A and Suite B can be used to protect foreign ...