What is cross-domain dissemination of SCI?

• A. Sharing SCI information within the same compartment
• B. Sharing across compartments with no authorization
• C. Sharing across compartments or domains only with proper authorization and need-to-know exist and through approved channels
• D. Publishing SCI in a public forum

Answer: (D)

Cross-domain dissemination of SCI means moving information between different security compartments or domains only when there is a verified need-to-know and the individual has proper authorization, using approved channels. This ensures sensitive material is shared only with people who must have it and through systems and procedures designed to protect it. Publishing SCI in a public forum violates these protections because it exposes highly sensitive information to the general public, bypassing need-to-know and authorization and using an unapproved channel. Sharing within the same compartment or across compartments without authorization also fails the cross-domain requirement; true cross-domain dissemination happens exclusively through authorized channels and with a legitimate need-to-know.