Write Once, and Detect Everywhere- Practical Sigma Rules for Modern SOCs

Book Description
Practical Detection Engineering with Sigma is a hands-on guide to building, testing, and operationalizing modern detections in real SOC environments.

The book walks you step by step through the full detection engineering lifecycle-from understanding Sigma fundamentals to writing structured rules and deploying them across SIEM and XDR platforms.

What you will learn
Design and write structured, maintainable Sigma rules for diverse log sources and enterprise environments.
Translate adversary techniques into behavior-based detections, aligned with MITRE ATT&CK tactics and techniques.
Convert vendor-agnostic Sigma rules into optimized SIEM and XDR platform-specific queries.
Validate and test detections using real telemetry, simulated attacks, and threat emulation frameworks.
Reduce false positives through better logic design, field normalization, and contextual enrichment.
Implement scalable detection engineering practices using Git-based versioning, automation, and CI/CD pipelines.

Table of Contents
1. Understanding Sigma and Its Importance
2. Anatomy of a Sigma Rule
3. Sigma Rule Logic and Conditions
4. Creating Rules for Windows Logs
5. Creating Rules for Linux and Network Logs
6. ATT&CK Mapping and TTP-Based Detection
7. Threat Simulation and Rule Testing
8. Sigma Rule Anti-Patterns and Best Practices
9. Real-World Detection Use Cases
10. Sigma Rules in SOC Workflows
11. Converting Sigma to SIEM Queries
12. Backend Limitations and Field Mapping Challenges
13. Automating Detection Delivery with CI/CD
14. Managing Rule Packs and Rule Versioning
15. Threat Hunting with Sigma
16. Intelligence-Driven Detection Engineering
17. Sigma in Open Source XDR
18. The Future of Sigma and Detection-as-Code
Appendices
Index