# SigmaHQ/sigma

Main Sigma Rule Repository

Repository: https://github.com/SigmaHQ/sigma
Canonical: https://ross.abutalabs.com/products/sigma
Homepage: https://sigmahq.io/
Language: Python
License: NOASSERTION
License Family: other
Topics: security, monitoring, siem, logging, signatures, elasticsearch, splunk, ids, sysmon
Last push: 2026-08-18T23:42:38+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 80, longevity 100
- inputs: {"age_days": 3539, "days_push": 15, "days_rel": 55, "gap_med": 53.5, "n_releases_24m": 11}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 10943, forks 2769 (observed 2026-08-28T04:10:44.774450+00:00)

## What it is
The main SigmaHQ repository containing over 3000 community-maintained Sigma detection rules written in a generic YAML format for describing malicious log events. Rules convert into queries for SIEM platforms like Splunk, Elasticsearch, Microsoft Sentinel, and QRadar via the sigma-cli tool and pySigma backends.

## Use cases
- detect malicious activity in SIEM logs
- convert detection rules to Splunk or Elasticsearch queries
- threat hunt for suspicious behavior in log data
- share portable vendor-neutral detection rules
- find rules for specific APT campaigns or zero-day exploits
- check compliance violations against CIS or NIST frameworks

## When to choose
- you run a SIEM and want free, community-maintained detection content
- you need vendor-neutral detection rules portable across Splunk, Sentinel, Elastic, and others
- you are a threat hunter or detection engineer looking for a starting rule base

## When to avoid
- you need network traffic or file signatures (use Snort or YARA instead)
- you want a turnkey monitoring product rather than rule content
- you need rules for a SIEM with no available pySigma backend

## Facets
- artifact type: dataset
- maturity: active
- function: security, monitoring, logging, search-engine
- domain: security, monitoring, developer-tools
- platform: cross-platform, python, cli
- tags: siem, detection-rules, threat-hunting, yara-for-logs, splunk, elasticsearch, sysmon, soc, yaml-rules, detection-engineering

## Member repositories
- SigmaHQ/sigma (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:44.774450+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:17:19.007253+00:00, confidence not recorded.
  - readme: https://github.com/SigmaHQ/sigma (fetched 2026-08-28T04:10:44.774450+00:00, sha abae5de40674)
  - homepage: https://sigmahq.io/ (fetched 2026-08-29T08:16:09.688074+00:00, sha 0e3bdab78e0d)
  - site_page: https://sigmahq.io/docs/guide/getting-started.html (fetched 2026-08-29T08:16:09.693135+00:00, sha 7d27129b64a0)
  - site_page: https://sigmahq.io/docs/digging-deeper/backends (fetched 2026-08-29T08:16:09.696862+00:00, sha 912b8f202da1)
  - site_page: https://sigmahq.io/docs/guide/about (fetched 2026-08-29T08:16:09.698797+00:00, sha bf5def67e42f)
  - site_page: https://sigmahq.io/docs/basics/rules.html (fetched 2026-08-29T08:16:09.701143+00:00, sha 54dc56960073)
  - site_page: https://sigmahq.io/docs/guide/about.html (fetched 2026-08-29T08:16:09.703580+00:00, sha bf5def67e42f)
- Data as of 2026-08-30T08:39:29.467469+00:00.