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Definitions:

The difference between desired and actual performance or behavior of a system or system element.
Sources:
NIST SP 800-160v1r1

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

Comments about the glossary's presentation and functionality should be sent to secglossary@nist.gov.

See NISTIR 7298 Rev. 3 for additional details.