This rule, designed for monitoring Amazon EKS clusters, checks the Kubernetes audit logs for events where users with usernames starting with 'system:' or 'eks:' are making requests from a public IP address. Such actions are potentially indicative of unauthorized or unexpected behavior, especially when coupled with administrative namespaces like 'system:' or 'eks:'. By identifying these instances, the rule assists in ensuring that Kubernetes best practices are followed, particularly around network security and user access controls. The rule generates alerts based on defined conditions that involve public IPs, aiming to enhance the security posture of the EKS cluster and provide visibility into potentially risky user behaviors.