Monitors unauthorized or suspicious user activity, prevents you from creating misconfigurations on your resources in OCI, and helps detect misconfigured resources, such as publicly accessible Object Storage buckets, instances, and restricted ports on security lists. The explanation is that Cloud Guard is a service that helps you improve the security posture of your tenancy by providing visibility into your cloud resources, identifying security misconfigurations and threats, and taking corrective actions to remediate them. Cloud Guard monitors user activity and resource configurations using data collectors and detectors, evaluates them against predefined or custom rules, generates problems and recommendations based on severity levels, and executes responders to fix the issues automatically or manually.