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  2. Classified information - Wikipedia

    en.wikipedia.org/wiki/Classified_information

    Documents and other information must be properly marked "by the author" with one of several (hierarchical) levels of sensitivity—e.g. restricted, confidential, secret, and top secret. The choice of level is based on an impact assessment; governments have their own criteria, including how to determine the classification of an information asset ...

  3. Classified information in the United States - Wikipedia

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

    The lower-level L clearance is sufficient for access to Secret Formerly Restricted Data and National Security Information, as well as Confidential Restricted Data and Formerly Restricted Data. [58] In practice, access to Restricted Data is granted, on a need-to-know basis, to personnel with appropriate clearances.

  4. Restricted Data - Wikipedia

    en.wikipedia.org/wiki/Restricted_Data

    In this way, a document, for instance, could be classified as "Secret" (S), "Secret//Restricted Data" (S//RD), or "Secret//Restricted Data-Critical Nuclear Weapon Design Information" (S//RD-CNWDI) depending on the type of information a document contains. Formerly Restricted Data (FRD) is a category also designated in the Atomic Energy Act of ...

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

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

    CONFIDENTIALInformation of which the unauthorized disclosure could reasonably be expected to cause damage to the national security. Unacknowledged Special Access Program (USAP): USAP & "Waived USAP" – Made known only to authorized persons, including members of the appropriate committees of the US Congress.

  6. Special access program - Wikipedia

    en.wikipedia.org/wiki/Special_access_program

    It drops the "restricted" classification level. It removes classification authority from 28 government entities and limits its use in 17 more. There are now explicit guidelines for the remaining three classification levels to prevent a systematic flood of classified documents coming from the Pentagon and other agencies.

  7. United States security clearance - Wikipedia

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

    A United States security clearance is an official determination that an individual may access information classified by the United States Government.Security clearances are hierarchical; each level grants the holder access to information in that level and the levels below it.

  8. Government Security Classifications Policy - Wikipedia

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

    Historically, the Government Protective Marking Scheme was used by government bodies in the UK; it divides data into UNCLASSIFIED, PROTECT, RESTRICTED, CONFIDENTIAL, SECRET and TOP SECRET. This system was designed for paper-based records; it is not easily adapted to modern government work and is not widely understood.

  9. Sensitive but unclassified - Wikipedia

    en.wikipedia.org/wiki/Sensitive_but_unclassified

    Sensitive Security Information (SSI) is a category of sensitive but unclassified information under the United States government's information sharing and control rules, often used by TSA and CBP. SSI is information obtained in the conduct of security activities whose public disclosure would, in the judgment of specified government agencies ...