Marking Classified Information

Marking is the principal way of letting holders of information know the specific protection requirements for that information. Marking and designation of classified information are the specific responsibility of original and and derivative classifiers.

eLearning Courses

Internet-based, self-paced training courses

  • Marking Special Categories of Classified Information Course IF105.16
    This course provides the requirements and methods for marking classified information and other classified materials.  Lessons address general marking requirements, marking originally classified information, derivatively classified information, changes in markings, marking special types, and categories of materials and information.

Job Aids

Security products designed to provide guidance and information to perform specific tasks

  • Marking Classified Information Job Aid PDF icon
    This job aid provides the requirements and methods for marking classified documents and other classified materials. It address general marking requirements, marking originally classified information, marking derivatively classified information, marking special types of documents and materials, changes in markings, marking foreign government information, and marking Atomic Energy information.

Security Shorts

Training videos, usually in 10 minutes or less, that allows you to refresh your knowledge of a critical topic or quickly access information needed to complete a job

  • Downgrading and Declassification
    Provides an opportunity to practice the thought process involved in calculating declassification instructions of a derivatively classified document derived from multiple sources.
  • Marking in the Electronic Environment
    Explains how to recognize and apply classification marking in the electronic environment.
  • Marking Syntax
    Provides information on how to apply the proper marking syntax to banner lines contained in a U.S. classified document based on portion markings contained therein. This includes the hierarchy and order of markings, the specific markings that fall within each category, and the proper formatting structure.