Continuous Authentication.
A pattern where authentication is evaluated continuously throughout a session rather than only at session start, with the session degraded or terminated when risk signals deteriorate.
Continuous authentication is the upper bound of adaptive auth, adaptive MFA challenges at session start; continuous authentication evaluates throughout. Most B2C and B2B SaaS settle for adaptive at start plus step-up at sensitive actions, which captures most of the value at much lower operational cost. Reach for continuous authentication when the threat model justifies the complexity.
Common questions
Is continuous authentication the same as adaptive MFA?
What signals does continuous authentication use?
Which CIAM ship continuous authentication?
Related terms
In the guides
Account Takeover Defense: A Layered Approach for 2026
ATO is the single largest CIAM threat in 2026. The defense stack is layered, credential stuffing protection, MFA, session management, and recovery design, each addressing a different attack class.
Adaptive Risk-Based Authentication: Decisioning at Login
Adaptive auth scores each login against risk signals, device, geo, velocity, behavior, and challenges only when the score warrants. Patterns and where vendors diverge.