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  1. Classified information in the United States - Wikipedia

    Sensitivity is based upon a calculation of the damage to national security that the release of the information would cause. The United States has three levels of classification: Confidential, …

  2. Government Security Classifications and Clearance Levels

    Dec 12, 2025 · Navigate the legal framework governing U.S. national security information, from classification standards to personnel clearances and physical handling requirements.

  3. The heart of a classification guide is the identification and delineation of the specific items or elements of information warranting protection, the classification levels, reasons for …

  4. Aug 4, 2020 · Identify and protect national security information and CUI in accordance with national level policy issuances. Promote information sharing, facilitate judicious use of …

  5. Security Classification Levels: Types, Examples, and Facts

    Discover security classification levels, their types, examples, and key facts about classified documents in our informative guide.

  6. Levels - U.S. Department of Defense

    Once a decision to classify is made, information will be classified at one of the three levels listed below. The OCA must be able to identify or describe the damage that unauthorized disclosure …

  7. Security Classification of Information, volume 2 (Quist), Chapter …

    Clearly defined classification levels are essential to an effective classification system. 1. The U.S. classification of information system has three classification levels -- Top Secret, Secret, and …

  8. eCFR :: 15 CFR 4a.3 -- Classification levels.

    § 4a.3 Classification levels. Information may be classified as national security information by a designated original classifier of the Department if it is determined the information concerns one …

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

    List of U.S. security clearance terms This list covers security clearance terms used in the United States of America. Within the U.S. government, security clearance levels serve as a …

  10. SCGs provide detailed classification guidance on program-specific information for use by derivative classifiers in applying appropriate classification markings and facilitate the proper …