Department of Defense Manual 5200.01, Volume 4: DoD Information Security Program: Controlled Unclassified Information (CUI), February 24, 2012 [Incorporating Change 1, May 9, 2018]   [open pdf - 273KB]

"It is DoD policy, in accordance with Reference (b), to: [a.] Identify and protect national security information and CUI [controlled unclassified information] in accordance with national level policy issuances. [b.] Promote information sharing, facilitate judicious use of resources, and simplify management through implementation of uniform and standardized processes. [c.] Protect CUI from unauthorized disclosure by appropriately marking, safeguarding, disseminating, and destroying such information."