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This book provides a comprehensive, risk-based guide to hardening Linux systems for production environments. It covers the Linux security model from kernel internals through network services, mandatory access controls, containers, and enterprise-scale operations. Every recommendation explains the underlying mechanism, the threat it mitigates, implementation details, and the operational trade-offs involved. The intended audience is Linux administrators, security engineers, DevSecOps professionals, and infrastructure architects who need both a deep understanding of Linux security and practical, production-ready configurations.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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