What should be done with unclassified documents that contain classified information?

Unclassified documents that contain classified information must be marked appropriately or destroyed to prevent unauthorized disclosure. This is essential to maintain national security and protect sensitive data from being accessed by individuals who do not have the necessary clearance. If unclassified documents contain classified information, failing to mark or destroy them could lead to inadvertent sharing or exposure, which could compromise sensitive information and violate security protocols. Proper handling ensures that all classified content is treated with the appropriate level of care, regardless of the document's unclassified status. This action aligns with the established guidelines for information security and classification management.