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

2025-08-15

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.

055 | Why Do We Need Centralized Logging? Making Sense of Log Chaos

2025-07-17

Why Do We Need Centralized Logging? Making Sense of Log Chaos

We’ve already discussed the importance of metrics monitoring for understanding the health of your IT infrastructure. But metrics are only part of the picture. To truly understand what’s happening inside your systems and applications, you need logs.

Logs are records of events generated by operating systems, applications, network devices, and nearly any software component. They capture what, when, where, and why something happened. Think of them as the “black box” of your infrastructure — an invaluable source of information for debugging, auditing, and incident investigation.