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  2. Security clearance - Wikipedia

    en.wikipedia.org/wiki/Security_clearance

    United States. In the United States, a 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.

  3. Classified information - Wikipedia

    en.wikipedia.org/wiki/Classified_information

    the object of a covert investigation, or a covert collection of information or intelligence. the identity of any person who is under covert surveillance. encryption and cryptographic systems. information or intelligence to, or received from, a foreign entity or terrorist group.

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

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

    T3 or T3R - Tier 3 or Tier 3 Reinvestigation, now replace all NACLC. T5 and T5R - Tier 5 or Tier 5 Reinvestigation, now replace SSBI and SBPR respectively. Yankee White – An investigation required for personnel working with the President and Vice President of the United States. Obtaining such clearance requires, in part, an SSBI.

  5. Classified information in the United States - Wikipedia

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

    The United States has three levels of classification: Confidential, Secret, and Top Secret. Each level of classification indicates an increasing degree of sensitivity. Thus, if one holds a Top Secret security clearance, one is allowed to handle information up to the level of Top Secret, including Secret and Confidential information. If one ...

  6. Sensitive compartmented information - Wikipedia

    en.wikipedia.org/wiki/Sensitive_compartmented...

    Sensitive compartmented information (SCI) is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems established by the Director of National Intelligence. [1]

  7. Sensitive security information - Wikipedia

    en.wikipedia.org/wiki/Sensitive_Security_Information

    The cover sheet used for Sensitive Security Information.. Sensitive security information (SSI) is a category of United States sensitive but unclassified information obtained or developed in the conduct of security activities, the public disclosure of which would constitute an unwarranted invasion of privacy, reveal trade secrets or privileged or confidential information, or be detrimental to ...

  8. Special access program - Wikipedia

    en.wikipedia.org/wiki/Special_access_program

    Special access programs (SAPs) in the U.S. Federal Government are security protocols that provide highly classified information with safeguards and access restrictions that exceed those for regular (collateral) classified information. SAPs can range from black projects to routine but especially-sensitive operations, such as COMSEC maintenance ...

  9. National Bureau of Investigation (Philippines) - Wikipedia

    en.wikipedia.org/wiki/National_Bureau_of...

    The National Bureau of Investigation (Filipino: Pambansang Kawanihan ng Pagsisiyasat, abbreviated as NBI) [3] is an agency of the Philippine government under the Department of Justice, responsible for handling and solving major high-profile cases that are in the interest of the nation. The NBI was modelled after the United States' Federal ...