Moving workloads to a cloud provider presents a fundamental shift in the way security is handled for most organizations. The transition from being responsible for security for the entire stack in an on-premise DC to the shared responsibility model in a cloud environment is an area where security and operations teams need to pay close attention. A cloud service should have the lines of responsibility documented and client responsibilities clearly articulated so that there is no misconception. A lot of security breaches occur due to misconfigurations of a cloud service by an organization and assuming the cloud provider is responsible for all of the security.
As an organization, how do you know if your cloud services are properly configured and where your risks are? With how accessible cloud services can be, not all cloud assets may be properly secured or tracked. This is where Cloud Security Posture Management (CSPM) tools come in. These tools provide security teams visibility by monitoring cloud environments to ensure that the deployed services or infrastructure do not have misconfigurations. This allows security teams to quickly act and remediate security issues in cloud service configurations instead of the misconfiguration going undetected until an attacker finds it.
All the major cloud providers will offer some form of security and compliance detection for their cloud. Security vendors have CSPM products that work across cloud environments. In IBM Cloud, the Security and Compliance Center provides visibility into IBM Cloud services as well as some visibility into other cloud provider’s services. The service focuses on Posture Management, Configuration Governance as well as Security Insights from other tools in the cloud. Let’s take a look at the posture management features.
The basis posture management functionality of the Security and Compliance Center comes from the IBM acquisition of Spanugo in 2020. A key part the service is defining a profile and a scope and attaching them to a scheduled scan. A profile would be made up of a collection of security controls called goals and a scope would be a collection of resources such as a resource group. There are numerous predefined security profiles such as ‘IBM Cloud Best Practises’ and CIS Benchmarks. Custom profiles can also be created.
Scans can be scheduled to occur with the profile of controls on a defined scope as needed. These tools are meant to enable continuous security monitoring, so I would recommend at least a daily scan of the environment to ensure that any misconfigured services are quickly detected. Results of the scan populate the dashboard with a posture score and which resources are in violation of the specified controls.
From the scan results above that the VPC Security Groups and ACLs are configured to allow connections to port 22 and 3389 from any source. Additionally, one of the Virtual Server Instances has a floating (public) IP address. This is against best practise and the combination of these misconfigurations would allow remote attackers to potentially access my virtual server.
Leveraging the Security and Compliance Center will help security teams ensure that they have a strong security posture and that their deployments in IBM Cloud are configured to best practises, helping them avoid costly security breaches.