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Sigma Rules

An open, vendor-neutral format for writing detection rules in YAML, that can be converted to many SIEM and EDR query languages. Sigma enables community sharing of portable detections.

Sigma is an open standard for detection rules: written in YAML in a vendor-neutral way, then converted to specific platform query languages (KQL, SPL, EQL, and more). Sigma rules let the community share detections that work across SIEM and EDR products, accelerating coverage and collaboration. As a logging-monitoring-telemetry topic, Sigma is widely used in detection engineering, supports detection-as-code workflows, and benefits from active open-source contribution.

Introduced in: Logging, Monitoring, and Telemetry

Examples

  • Writing a Sigma rule in YAML and converting it to KQL for one platform.
  • Adopting a community Sigma rule and tailoring it to local data.
  • Contributing a new Sigma rule to a community repository.