Define "chain of custody."

"Chain of custody" refers specifically to the process of maintaining and documenting the handling of classified materials to ensure their integrity from the point of creation or acquisition through to their final disposition. This concept is crucial in security, especially within the context of classified information, as it helps to verify that documents, materials, or evidence have not been altered or tampered with during their handling.

Maintaining a chain of custody involves careful tracking of who accesses the materials, how they are stored, and any transfers of possession. This ensures that any investigations or assessments of the classified materials can be conducted with a clear understanding of their history, thereby preserving the evidence's reliability and authenticity.

This precise documentation prevents unauthorized access and ensures that each individual who handles the materials is accountable for their actions, which is essential in protecting national security and sensitive data.