What happens if a derived document includes both classified and unclassified information?

When a derived document contains both classified and unclassified information, the entire document must be marked as classified. This requirement ensures that the classified information retains its protective status and is not inadvertently disclosed or treated as unclassified. The principle behind this is to uphold national security protocols, as even a small amount of classified content can pose a risk if shared without the proper markings and controls.

Marking the document as classified indicates that readers and handlers need to be aware of the sensitive nature of the included information, ensuring appropriate handling, storage, and dissemination practices. This approach helps to mitigate risks associated with the accidental exposure of classified details and maintains compliance with relevant regulations governing information security.