What guidance is available for marking sensitive compartmented information?

The guidance for marking Sensitive Compartmented Information (SCI) varies depending on the specific classification and handling requirements set forth by the relevant security and intelligence agencies. However, there are some common guidelines and practices that can be followed when marking SCI. These guidelines generally align with the overall principles of information classification and protection.

The specific guidance for marking SCI is typically provided by the originating agency or organization that is responsible for the classification and management of the information. The guidance may include instructions on the appropriate markings, labels, headers, and handling instructions to be applied to SCI materials.

In the United States, for example, the Director of National Intelligence (DNI) has issued guidelines and standards for the handling and marking of classified information, including SCI. These guidelines are outlined in various policy directives and instructions such as the Intelligence Community Directives (ICDs) and the Security Executive Agent Directive (SEAD) series.

These guidelines may include specific requirements for marking SCI materials with appropriate classification level indicators (e.g., Top Secret, Secret, Confidential), SCI control system designations (e.g., SI-G, TK), compartment names, dissemination controls, handling caveats, and special access control markings.

It is important to note that the specific guidance for marking SCI can vary between different agencies, departments, or countries. Therefore, individuals handling SCI should consult the applicable agency-specific guidelines and adhere to the specific requirements provided by their organization’s security office or classification authority.

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