An information system or component of an information system that is outside of the authorization boundary established by the organization and for which the organization typically has no direct control over the application of required security controls or the assessment of security control effectiveness. Source : NIST SP 800-37 Rev 1; NIST SP 800-53 Rev 4 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. Source: NIST SP 800-37 Rev 1; NIST SP 800-53 Rev 4
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An information system or component of an information system that is outside of the authorization boundary established by the organization and for which the organization typically has no direct control over the application of required security controls or the assessment of security control effectiveness. Source : NIST SP 800-37 Rev 1; NIST SP 800-53 Rev 4 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. Source: NIST SP 800-37 Rev 1; NIST SP 800-53 Rev 4
Cite this term
Election Security Glossary. (2026). External Information System (or Component) External Information System Service. In Election Security Glossary. Retrieved August 13, 2026, from https://electionsecurityglossary.com/glossary/external-information-system-or-component-external-information-system-service
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