083 | Proactive Security: Lynis and the Modern Approach to Linux Server Hardening

August 15, 2025

Introduction: From Reactive Defense to Proactive Security

In 2025, attacks on servers are becoming increasingly sophisticated, and reactive measures (firewall, Fail2Ban, CrowdSec) are no longer enough. The modern DevSecOps approach requires proactive hardening—strengthening the system—to minimize the attack surface before public exploits appear.

Lynis remains one of the key open-source security auditing tools for Unix systems, but today it is crucial to complement it with integration into security standards frameworks (CIS, SCAP) and automation in CI/CD pipelines.