Tenable Cyber Exposure Study on System Hardening

This Technical Report presents a comprehensive examination of system hardening and log management practices essential for securing enterprise assets and software. It outlines the importance of proactive measures in addressing vulnerabilities that may arise from default configurations, which often leave systems open to exploitation. The report details various strategies for hardening systems, including the removal of unnecessary services and protocols, and emphasizes the need for secure configurations as per established frameworks such as the CIS Critical Security Controls version 8. Additionally, it discusses the significance of log collection and management in reinforcing security measures. The study also provides guidance on utilizing Tenable's tools for compliance verification and visualizing compliance data, along with practical examples of querying audit checks to enhance security posture. The document serves as a valuable resource for organizations aiming to improve their cyber exposure management through systematic hardening and effective log management practices.