What is Citadel? Princeton University's Secure Research Infrastructure environment, Citadel, is a NIST 800-171 (CUI), NIST 800-53 (FISMA), and HIPAA compliant environment for sensitive data loads. Who can use it? All faculty of the Princeton University and the members of their research groups, as well as collaborators at other institutions, are allowed to use the system. All users must pass the required training and be sponsored by the faculty member. What are the requirements to use Citadel? All users requesting access to Citadel are asked to complete training and sign Rules of Behavior. Additional information is available in the Service Now. Can students use it? Yes, graduate students can use it for research and authorized students can use it as part of any registered course. Students must satisfy the same training requirements as other researchers before they will be allowed to use Citadel. Can remote collaborators use it? Non-Princeton collaborators authorized can access Princeton Citadel resources. Collaborators are assigned Princeton NetID (RCU or DCU) accounts and follow the same policy, standards, and procedures used for Princeton users.