What aspect of Zscaler helps mitigate risks from external threats?

User behavior analytics and context-based policies are crucial in mitigating risks from external threats because they allow for dynamic and informed decision-making based on actual user behaviors and contextual information. This approach enables organizations to detect anomalies or deviations from normal usage patterns that may indicate a potential security threat.

By analyzing user behavior, Zscaler can identify suspicious activities and implement context-aware policies that not only enhance security but also improve the overall user experience. For example, if a user's access patterns suddenly change or if there are attempts to access sensitive data from unusual locations, the system can trigger alerts or automatically enforce stricter access controls. This proactive stance helps organizations respond quickly to potential threats and reduces the chance of unauthorized access or data breaches.

The other options, while they may contribute to a broader security strategy, do not specifically address the proactive identification of external threats in the same way. Firewall rules and passwords focus more on traditional security measures without the adaptability and intelligence provided by behavior analytics. Physical security measures, although important, do not directly mitigate digital threats. Rate limiting and bandwidth control can help manage network traffic but are less effective in directly addressing external security risks.