unauthorized access

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Definitions:

Any access that violates the stated security policy.
Sources:
CNSSI 4009-2015

A person gains logical or physical access without permission to a network, system, application, data, or other resource.
Sources:
NIST SP 800-82r3

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.