Department of Defense Directive 5240.02: Counterintelligence (CI), March 17, 2015 [open pdf - 100KB]
"This directive: a. Reissues DoD Directive (DoDD) O-5240.02 (Reference (a)) to update established policy and assign responsibilities for conducting CI [Counterintelligence] activities and reporting CI information to Congress, the Secretary of Defense, and the Under Secretary of Defense for Intelligence (USD(I)) in accordance with DoDD 5143.01 (Reference (b)). b. Incorporates and cancels the Assistant Secretary of Defense for Command, Control, Communications, and Intelligence Memorandum (Reference (c)) and USD(I) Memorandums (References (d) and (e))."
Department of Defense Directive 5240.02; DoDD 5240.02
Defense Technical Information Center (DTIC): http://www.dtic.mil/