Initial Access: GKE resource modified anonymously from the internet

This document describes a threat finding type in Security Command Center. Threat findings are generated by threat detectors when they detect a potential threat in your cloud resources. For a full list of available threat findings, see Threat findings index.

Finding description

A potentially malicious actor used one of the following Kubernetes default users or user groups to modify a Kubernetes resource in the cluster:

  • system:anonymous
  • system:authenticated
  • system:unauthenticated

These users and groups are effectively anonymous. A role-based access control (RBAC) binding in your cluster granted that user permission to modify those resources in the cluster.

Review the modified resource and the associated RBAC binding to ensure that the binding is necessary. If the binding isn't necessary, remove it. For more details, see the log message for this finding.

To address this finding, see Avoid default roles and groups.

What's next