The scope and depth of monitoring authentication activity depend on your security objectives, risk appetite, and resources. Nevertheless, you should pay attention to user behavior, authentication factors, and authentication events. User behavior includes the patterns and habits of users who access your network or systems, such as their roles, permissions, locations, devices, and schedules. This can help you establish a baseline of normal activity and detect any deviations or anomalies that may indicate malicious or unauthorized access. Authentication factors refer to the types and combinations of information or methods used to verify identity, such as passwords, tokens, biometrics, or certificates. Monitoring these can help you evaluate the strength and security of your authentication mechanisms and enforce the use of multi-factor authentication (MFA) or adaptive authentication where appropriate. Finally, authentication events refer to the specific occurrences and outcomes of authentication like successful or failed login attempts. Monitoring these can help you identify and respond to any incidents or issues that may affect the availability, integrity, or confidentiality of your network or systems.