The automated estimation that an interface service has been misconfigured. Sensitive interface services are first identified based on common characteristics, and those characteristics are associated with sensitivity based on behavior across multiple clusters. Thereafter, the threat assessment estimates that a particular interface service is misconfigured if the particular interface service has these same common characteristics, is accessible from outside the cluster, and does not require authentication. Cluster administrators can therefore be more fully and timely advised when a misconfiguration of an interface service subjects their cluster to undue security risks.