What types of information can be classified derivatively?

Derivative classification applies specifically to information that is based on classified source material. This means that if a piece of information derives from an already classified document or source, it can be classified as well, following the guidance and principles set forth by the originating classification authority.

This classification is important because it ensures that sensitive information, which could affect national security or the safety of the nation and its allies, is protected from unauthorized disclosure, even if the derivative information itself is newly created or reformulated. The classification level of the original source material dictates the classification level of the derivative information, which helps maintain consistent and secure handling of sensitive data.

The other options do not accurately reflect the nature of derivative classification. For example, unclassified information by itself does not generally warrant classification, and simply being published or lacking relevance to national security does not support derivative classification either. Thus, understanding that derivative classification is fundamentally tied to existing classified sources is essential.