Zero Trust doesn't stop at login. You verify continuously throughout the session. Device posture can change after authentication. A laptop that was healthy might download malware. A user's risk profile might change based on behavior.
Continuous verification watches for anomalies:
- Is the user accessing resources at unusual times?
- Is the access pattern different from their baseline?
- Has the device posture degraded since authentication?
When conditions change, access can be restricted in real time. A session might be terminated or step-up authentication required.