This document establishes the formal interpretation of the Trusted Computer System Evaluation Criteria (TCSEC) specifically regarding the implementation and evaluation of computer security subsystems. The text provides a technical framework for vendors and evaluators to apply security requirements to modular components within a larger system architecture. It outlines the necessary criteria for ensuring that isolated subsystems maintain the integrity and confidentiality standards required by the Department of Defense.

Experts recognize this document as a foundational technical reference for historical cybersecurity compliance and systems evaluation. Readers frequently note the high level of technical density and the specialized nature of the regulatory language used throughout the text.