What must classified material be before it is handled or stored?

Classified material must be properly marked before it is handled or stored to ensure that individuals recognize its sensitivity and understand the necessary protocols for handling it. Proper markings provide clear identification of the classified status of the material, which is vital for protecting national security and ensuring compliance with legal and regulatory requirements. This marking includes classification level indicators, such as "Top Secret," "Secret," or "Confidential," along with handling instructions and any applicable caveats.

This practice not only serves to inform individuals about the level of protection required but also helps prevent unauthorized access or mishandling of sensitive information. It is essential in maintaining a secure environment and minimizing risks associated with improperly managed classified data. Proper marking establishes accountability and discipline in information handling practices across all levels of an organization.