Tools / Zero Trust Architecture (ZTA) Interview questions
Explain the internal working of continuous adaptive trust scoring?
A continuous adaptive trust engine ingests multiple live signal streams rather than evaluating a single point-in-time check: user and entity behavior analytics (UEBA), device telemetry, network and geolocation reputation, and the sensitivity of the resource being requested.
These signals are combined into a weighted composite score, using either explicit rule weights or a machine-learning model trained on historical, labeled incident data. Critically, the score is not static; it decays or updates as new signals arrive throughout the session, so a score computed at login can look quite different ten minutes later if, for example, the user's traffic suddenly routes through an unfamiliar network.
The resulting score maps to a graduated response tier, silently allow, allow with heightened monitoring, require step-up authentication, restrict scope, or terminate the session, rather than a binary allow/deny. Confirmed incidents feed back into the model, retraining the weights so future scoring better reflects real attacker behavior rather than only theoretical risk factors.
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