This video lesson provides a short refresher on the fundamental Need-to-Know security principle. It reviews a case history and provides guidelines on your responsibilities for applying the principle. The lesson also includes training resources on how to identify insider threats that may be violating the Need-to-Know principle. Note: The video references DoD 5200-2-R which has been replaced by DoD Manual5200.02 effective April 3, 2017. For updated guidance on Need-to-Know refer to the DoD Manual. Click the links to learn more...

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Additional Resources for you to Explore

Learn more about the Need-to-Know security principle.
Read more about the Leandro Aragoncillo case .
Learn about insider threat indicators in the DSS's Insider Threat Brochure
To learn how to develop an Insider Threat program for industry review the Insider Threat For Industry Job Aid.


If you have questions about whether you have a "Need-to-Know" contact your supervisor.