An information system service that is implemented outside of the authorization boundary of the organizational information system (i.e., a service that is used by, but not a part of, the organizational information system) and for which the organization typically has no direct control over the application of required security controls or the assessment of security control effectiveness. (SP 800-53; SP 800-37; CNSSI-4009((NISTIR)
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An information system service that is implemented outside of the authorization boundary of the organizational information system (i.e., a service that is used by, but not a part of, the organizational information system) and for which the organization typically has no direct control over the application of required security controls or the assessment of security control effectiveness. (SP 800-53; SP 800-37; CNSSI-4009((NISTIR)
Cite this term
Election Security Glossary. (2026). External Information System Service. In Election Security Glossary. Retrieved August 22, 2026, from https://electionsecurityglossary.com/glossary/external-information-system-service
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