trusted operating system

{
  "id": "MLC-T-CYB-004435",
  "term": "trusted operating system",
  "field": "Cybersecurity",
  "definition": "1. 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.\n\n2. An operating system that manages data to make sure that it cannot be altered, moved, or viewed except by entities having appropriate and authorized access rights.",
  "abbreviation": "TOS",
  "references": [
    "CNSSI 4009-2022 from CNSSI 1253",
    "NIST SP 800-152",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/trusted-operating-system/"
}