Assistant to the Secretary of Defense for Intelligence Oversight
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The Assistant to the Secretary of Defense for Intelligence Oversight, formerly the Senior Intelligence Oversight Official, or SIOO, was responsible to the U.S. Secretary of Defense for the independent oversight of all intelligence, counterintelligence, and intelligence-related activities[1] in the Department of Defense. The organization's charter is articulated in DoD Directive 5148.13.[2] The ATSD(IO) ensures that all activities performed by intelligence, counterintelligence, and intelligence related units are conducted in accordance with Federal law, Executive Orders, DoD directives, regulations and policies. In July 2014, this position was retitled as the Department of Defense Senior Intelligence Oversight Official (DoD SIOO), after the position was aligned within the Office of the Deputy Chief Management Officer (DCMO). On January 11, 2021, the Acting Secretary of Defense directed the "re-establishment" of the ATSD(IO) office and title. On September 1, 2021, the Department of Defense disestablished the ATSD (IO) and subordinated the DoD Intelligence Oversight function under a new Assistant to the Secretary of Defense for Privacy, Civil Liberties & Transparency, ASTD (PCLT).