For Official Use Only

For Official Use Only (FOUO) is an information security designation used by some governments.

United States

Among U.S. government information, FOUO was primarily used by the U.S. Department of Defense as a handling instruction for Controlled Unclassified Information (CUI) which may be exempt from release under exemptions two through nine of the Freedom of Information Act (FOIA).[1][2] It is one of the various sub-categorizations for strictly unclassified information which, on 24 February 2012, was officially consolidated as CUI.

Other departments continuing the use of this designation include the Department of Homeland Security.[3]

U.S. Department of Defense

On 24 February 2012, the Under Secretary of Defense for Intelligence published the publicly available DoDM 5200.01 DoD Information Security Program, a four-volume manual consolidating all marking of information on used by the U.S. Department of Defense.[4] Most of the information regarding FOUO was in now-superseded fourth volume, but the second volume also contains guidelines on FOUO information.

On March 6, 2020 the DoD replaced DoDM 5200.01 Volume 4 with DoDI 5200.48 Controlled Unclassified Information (CUI). The term "FOUO" had been defined in DoDM 5200.01 Vol 4. It is no longer in the replacement document except as reference as to not requiring a "U" marking in the banner or footer signifying unclassified information as was required with the "old FOUO marking" (para 3.4.b.(1)).

Australia

For Official Use Only (FOUO) is one of five categories of the Dissemination Limiting Marker (DLM) defined by the Australian Government Information Security Management Guidelines.[5] The guidelines state that FOUO should only be used on unclassified information, when its compromise may cause limited damage to national security, Australian Government agencies, commercial entities or members of the public. However unlike the United States usage, the presence or absence of an FOUO marker expressly does not provide any information about the document's status under the Freedom of Information Act.

See also

References
  1. "Archived copy". Archived from the original on 2008-08-22. Retrieved 2012-03-26.CS1 maint: archived copy as title (link)
  2. "DOD releases New Controlled Unclassified Information Instruction". www.ndia.org. Retrieved 2020-12-14.
  3. "SAFEGUARDING SENSITIVE BUT UNCLASSIFIED" (PDF). www.dhs.gov. Retrieved 2019-08-08.
  4. "Department of Defense MANUAL" (PDF). www.esd.whs.mil. February 24, 2012. Retrieved 2019-08-08.
  5. "Australian Government Information Security Management Guidelines" (PDF). Archived from the original (PDF) on 2012-01-26. Retrieved 2011-12-21.
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