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NIST SP 800-33

NIST SP 800-33: A publication by the National Institute of Standards and Technology (NIST) titled “Underlying Technical Models for Information Technology Security,” which provides guidance on technical foundations for IT security. It presents models describing essential security services and the corresponding mechanisms needed to deliver those services. This document assists organizations in understanding principles for constructing secure IT systems, covering aspects like confidentiality, integrity, authentication, and non-repudiation, although it has been superseded by more recent NIST SP 800 series documents offering detailed security guidance.

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