B6: Detection, DevSecOps & Secure Code Review
Blue Team Detection: Sysmon, Sigma & YARA
Think like a defender: telemetry, detections, validation, tuning, and response context.
Open the interactive lesson & lab →
| Tool/format | Best for | Quality question |
|---|---|---|
| Sysmon | Windows endpoint telemetry like process, network, file, and registry events. | Does the config collect the behavior without flooding analysts? |
| Sigma | Portable SIEM detection logic. | Is the rule tied to stable behavior, not brittle strings? |
| YARA | File/content pattern matching. | Are strings specific enough and combined with structural conditions? |
- Define the behavior you need to catch.
- Identify the telemetry source and event fields.
- Write a rule that catches behavior, not just a tool name.
- Test with benign and malicious-like samples in a lab.
- Tune false positives and document investigation steps.