expected inactivity

** A condition used in session-management and access-control policy to denote a period during which a user anticipates not interacting with a system — distinguishing user-anticipated absence (a behavioral/intentional state) from mere observed idle time, which is handled by automatic mechanisms. In NIST control language, it serves as the organization-definable threshold after which a user is required to proactively log out, as distinct from the automatic session-lock or termination triggered by measured idle time under separate controls. The phrase functions as an ordinary English compound that carries no specialized technical meaning beyond the sum of its parts: the words "expected" and "inactivity" are used in their plain senses. **VERDICT:** COMPOSITIONAL **Sources:** - NIST SP 800-53 Rev. 4, Control AC-2(5) — *Inactivity Logout*, via csf.tools: https://csf.tools/reference/nist-sp-800-53/r5/ac/ac-2/ac-2-5/ - NIST SP 800-171r3, Section 03.01.01: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/800-171r3/NIST.SP.800-171r3.html - NIST SP 800-171Ar3, Assessment Objective A.03.01.01.h: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/800-171Ar3/NIST.SP.800-171Ar3.html

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