How must classified documents be stored when not in use?

Classified documents must be stored in approved security containers, such as safes or vaults, to ensure their protection from unauthorized access. This requirement is integral to maintaining the integrity and confidentiality of sensitive information. Security containers are specifically designed to withstand unauthorized attempts to access the contents and have meeting standards set forth by appropriate authorities.

Such careful handling ensures compliance with security regulations and protects national security interests. The use of safes or vaults minimizes the risk of espionage, theft, or inadvertent exposure to individuals who are not authorized to access classified information. This heightened level of security is essential in safeguarding classified materials.

Other options may suggest alternative storage methods, but they do not provide the necessary level of security that approved containers do. Open offices, personal devices, or locked drawers lack the robust security features needed for classified documents and can lead to potential vulnerabilities.