Continuous Authentication

Continuous Authentication: Continuous assessment of whether an active session can still be attributed to the authorized user. Secure implementation depends, in particular, on suitable algorithms, correct key management, verified implementationsImplementationThe practical realization of a security design, requirement, or control in a system or process., and a controlled chain of trust.

How it works and where it fits

Continuous Authentication separates the subject, digital identity, authentication factor, and authorization decision. Authentication establishes who or what is presenting an identity; authorization then determines which action is permitted in the current context. Session state, device trust, request origin, and risk signals can further influence that decision.

Practical security relevance

Effective implementation requires a controlled identity lifecycle from creation through role and entitlement changes to suspension and removal. Strong authentication, least privilege, periodic recertification, and traceable logs are central. Controls must also identify abuse of legitimate accounts, because valid credentials alone do not prove that an action is legitimate.

Related concepts

• Adaptive AuthenticationAdaptive AuthenticationAuthentication method that requires additional checks depending on risk and context.: Authentication method that requires additional checks depending on risk and context.
• AuthenticationAuthenticationVerification of the claimed identity of a user or system.: Verification of the claimed identity of a user or system.
• Identity Threat Detection and ResponseIdentity Threat Detection and ResponseDetection and handling of attacks targeting identities, accounts, and authentication systems.: Detection and handling of attacks targeting identities, accounts, and authentication systems.
• Behavioral AnalyticsBehavioral AnalyticsAnalyzes user and system behavior to detect suspicious deviations.: Analyzes user and system behavior to detect suspicious deviations.