While the Oracle Communications Security Shield Cloud Service (Security Shield) provides a high quality and secure docker image for the Cloud Communication Service (CCS) deployed in your network and running on your platforms (for example, Operating System (OS) and file systems). It remains a joint responsibility to ensure that the CCS runs in a secured environment. Oracle recommends that you securely harden your OS and that access to your OS, upon which CCS is running, is well managed. Inappropriate access to the CCS environment can lead to exposure of the configuration, private keys, and PI-keys. Oracle recommends that you ensure that you reserve proper resources (memory, CPU, network bandwidth) for the CCS.