Term · 4. Identification & Authentication
User Session
Definition
Temporal context maintained between authentication and logout — represents a user's authenticated state across multiple requests. Implemented via session cookies, JWT tokens, OAuth access tokens, or platform-native session objects. Modern best practices: short-lived sessions with silent refresh, server-side session state for revocation, continuous evaluation of session validity.
- Application
- Standards: OAuth 2.0 token lifetimes, OIDC session management spec, Continuous Access Evaluation Protocol (CAEP) for real-time session events. Session termination triggers: explicit logout, idle timeout, absolute timeout, risk event (CAEP signal).
- Standards & regulations
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- NIST SP 800-63-3 «A session begins with an authentication event and ends with a session termination event. A session is bound by use of a session secret that the subscriber’s system uses to prove possession of an authe»
- NIST SP 800-63B «The continuity of authenticated sessions SHALL be based on the possession of a session secret that is issued by the session host at the time of authentication, as part of an authentication ceremony ti»
- OASIS SAML 2.0 Session Token Profile Version 1.0 «Web Servers and Application Servers generally maintain security state information for currently active users, particularly once some type of authentication has occurred. This specification defines a f»
- Sources
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- NIST SP 800-63 Digital Identity Guidelines (NIST) primary source
Related terms
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Login
Common term for the user-facing authentication interaction — entering credentials at a sign-in form. Modern patterns: pa …
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Multi-factor Authentication (MFA)
Authentication requiring two or more independent factors from different categories: knowledge (password), possession (ph …
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Single Sign-On (SSO)
Authentication mechanism allowing users to access multiple applications with one login. Federated SSO (SAML, OIDC) — IdP …
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Authentication (AuthN)
Process of verifying that a principal is who they claim to be. Three classic factors: knowledge (password, PIN), possess …
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Authentication Information
Data the principal uses to prove identity during authentication — passwords, OTP codes, biometric templates, FIDO2 crede …
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Continuous Authentication
Authentication paradigm verifying user identity continuously throughout a session, not just at login. Uses behavioral bi …