An operating system in which there exists a level of confidence (based on rigorous analysis and testing) that the security principals and mechanisms (e.g., separation, isolation, least privilege, discretionary and non-discretionary access control, trusted path, authentication, and security policy enforcement) are correctly implemented and operate as intended even in the presence of adversarial activity. Source: CNSSI No. 1253
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An operating system in which there exists a level of confidence (based on rigorous analysis and testing) that the security principals and mechanisms (e.g., separation, isolation, least privilege, discretionary and non-discretionary access control, trusted path, authentication, and security policy enforcement) are correctly implemented and operate as intended even in the presence of adversarial activity. Source: CNSSI No. 1253
Cite this term
Election Security Glossary. (2026). Trusted Operating System. In Election Security Glossary. Retrieved August 22, 2026, from https://electionsecurityglossary.com/glossary/trusted-operating-system
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