https://artifacts.trustmarkinitiative.org/lib/tips/nist-sp-800-53-r4-security-control-si-8_-spam-protection/4/NIST SP 800-53 r4 Security Control SI-8: Spam Protection4Profile of requirements corresponding to NIST Special Publication 800-53, r4, Security Control SI-8: Spam Protection. 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/800-53HighInformation IntegrityModerateNISTP2SecuritySpam ProtectionSystemhttps://artifacts.trustmarkinitiative.org/lib/tds/spam-protection-updates/1.0/1Spam Protection Updates1.0Defines conformance and assessment criteria for verifying that an organization updates spam protection mechanisms when new releases are available in accordance with organizational configuration management policy and procedures.https://artifacts.trustmarkinitiative.org/lib/tds/spam-protection-at-entry-points/1.0/2Spam Protection at Entry Points1.0Defines conformance and assessment criteria for verifying that an organization employs spam protection mechanisms at information system entry points to detect and take action on unsolicited messages.https://artifacts.trustmarkinitiative.org/lib/tds/spam-protection-at-exit-points/1.0/3Spam Protection at Exit Points1.0Defines conformance and assessment criteria for verifying that an organization employs spam protection mechanisms at information system exit points to detect and take action on unsolicited messages.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>.