Practical Detection Engineering with Sigma

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

KEY FEATURES
● Get a free one-month digital subscription to www.avaskillshelf.com
● End-to-end guide to writing, testing, and deploying Sigma detection rules across Windows, Linux, and network log sources.
● Step-by-step conversion of Sigma rules into backend-specific queries for Elastic, Splunk, Microsoft Sentinel, and Wazuh.
● Practical detection-as-code approach including version control, CI/CD pipelines, rule lifecycle management, and production-ready workflows.

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.

You will learn how to translate adversary behavior into behavior-based detections, aligned with MITRE ATT&CK, create rules for Windows, Linux, and network telemetry, and convert them into backend-specific queries for platforms such as Elastic, Splunk, Microsoft Sentinel, and Wazuh. Practical examples demonstrate how to validate detections using real and simulated attack data, reduce false positives, and design alerts that analysts can confidently triage.

From rule creation to CI/CD automation, version control, and large-scale rule management, this book equips you to build scalable, maintainable, and production-ready detection programs aligned with modern security operations.

WHAT WILL YOU 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.

WHO IS THIS BOOK FOR?
This book is intended for SOC analysts (L1–L3), detection engineers, threat hunters, SIEM and XDR engineers, incident responders, and Blue Team professionals who want to design scalable, vendor-agnostic detections using Sigma. Readers should understand basic logging concepts, operating system security events, and SIEM fundamentals; familiarity with YAML and MITRE ATT&CK is helpful, but not compulsory.

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

Wojciech Ciemski is a cybersecurity engineer and detection specialist with over a decade of hands-on experience. His work focuses on detection engineering, Sigma Rule Language, and research-driven analysis of adversary behavior mapped to MITRE ATT&CK. He designs and tests scalable SIEM and XDR detection pipelines, based on real-world threat

About the Technical Reviewer
Nikolaos Thymianis is a seasoned Cyber Security professional with over eight years of experience, rising from entry-level roles to Chief Information Security Officer (CISO). He holds a degree in Cultural Informatics from the University of the Aegean and a Master’s in Information Security from the University of Brighton, earned through scholarship. He has worked extensively with healthcare professionals, supporting NHS organizations in security assurance and maturity assessments, helping strengthen hospital cybersecurity standards across the United Kingdom. As the CISO at Caresocius (2018–2021), Nikolaos significantly improved the organization's security. Currently, he is in the pharmaceutical sector, focusing on risk and exception management, while advising the University of Piraeus.

A recognized speaker and author, Nikolaos has presented at UKSec and contributed to leading cybersecurity forums, championing resilience, awareness, and strategic data protection. Dr. Kunal Sehgal is a cyber-evangelist with over 20 years of experience and a passionate advocate for sharing Cyber Threat Intelligence. He promotes collaboration among cyber defenders across public and private sectors, bridging geographical and industry boundaries. Dr. Kunal is also actively engaged with communities across Asia, supporting global law enforcement agencies. He played a key role in establishing two not-for-profit ISACs in Singapore, strengthening intelligence-sharing networks across the APAC region in collaboration with National CERTs, regulators, and government bodies to combat cybercrime and enhance resilience. Dr. Kunal also specializes in building regional security services for major financial institutions, delivering actionable strategies and strong governance frameworks. A dedicated researcher and author, he holds 19 certifications and has published several whitepapers and books in cybersecurity