# 01 - Sigma Rules: Universal Detection Logic & SIEM Conversion

Writing Sigma rules for universal detection: YAML syntax, logsource mapping and automatic conversion for Splunk, Elastic and Sentinel.

## What you'll learn

- What is Sigma and Why It Became the Standard
- Anatomy of a Sigma Rule
- Mandatory Fields and Metadata
- Logsource: The Heart of Portability
- Advanced Modifiers

*This article is part of the **Detection Engineering** series on federicocalo.dev.*

---

## Read the full article

The complete article (26 min read) with code examples, diagrams, and practical exercises is available here:

**➡️ [01 - Sigma Rules: Universal Detection Logic & SIEM Conversion](https://federicocalo.dev/en/blog/sigma-rules-universal-detection-logic-siem-conversion)**

`https://federicocalo.dev/en/blog/sigma-rules-universal-detection-logic-siem-conversion`

---

*By [Federico Calò](https://federicocalo.dev) — Software Developer & Technical Writer*