https://artifacts.trustmarkinitiative.org/lib/tips/nist-sp-800-53-r4-security-control-ac-21_-information-sharing/4/NIST SP 800-53 r4 Security Control AC-21: Information Sharing4Profile of requirements corresponding to NIST Special Publication 800-53, r4, Security Control AC-21: Information Sharing. Applicable to MODERATE impact and HIGH impact systems.2021-04-26T00:00:00.000ZfalseThis document and the information contained herein is provided on an "AS IS" basis, and the Georgia Tech Research Institute disclaims all warranties, express or implied, including but not limited to any warranty that the use of the information herein will not infringe any rights or any implied warranties or merchantability or fitness for a particular purpose. In addition, the Georgia Tech Research Institute disclaims legal liability for any loss incurred as a result of the use or reliance on the document or the information contained herein.https://trustmarkinitiative.org/TMIPRIMARYhelp@trustmarkinitiative.org555-555-5555https://trustmarkinitiative.org/800-53Access ControlHighInformation SharingModerateNISTP2Securityhttps://artifacts.trustmarkinitiative.org/lib/tds/information-sharing---enable-users-to-assess-access-authorizations/1.0/1Information Sharing - Enable Users to Assess Access Authorizations1.0Defines conformance and assessment criteria for verifying that an organization permits authorized users to determine whether access authorizations assigned to sharing partners match the access restrictions on the information being shared.https://artifacts.trustmarkinitiative.org/lib/tds/information-sharing---assist-users-in-assessing-access-authorizations/1.0/2Information Sharing - Assist Users in Assessing Access Authorizations1.0Defines conformance and assessment criteria for verifying that an organization assists users in making information sharing/collaboration decisions.SP800-53R4NIST Special Publication 800-53 Revision 4, Security and Privacy Controls for Federal Information Systems and Organizations, National Institute of Standards and Technology, April 2013 (Includes updates as of 01-15-2014). Available at <a href="http://dx.doi.org/10.6028/NIST.SP.800-53r4">http://dx.doi.org/10.6028/NIST.SP.800-53r4</a>.