Azure-Sentinel
Cloud-native SIEM for intelligent security analytics for your entire enterprise.
A community library of hundreds of ready-made security detection rules, hunting queries, visual dashboards, and automated response workflows for Microsoft Sentinel and Microsoft 365 Defender, organized by data source and threat type.
This repository is a community content library for Microsoft Sentinel and Microsoft 365 Defender, two security products from Microsoft. Microsoft Sentinel is a cloud-based SIEM, which stands for Security Information and Event Management: a system that collects log data from across an organization's computing environment and looks for patterns that might indicate an attack or breach. This repository holds the ready-made content that helps teams get started with that product.
The content includes detection rules (queries that flag suspicious activity automatically), hunting queries (queries security analysts run manually when investigating a threat), workbooks (visual dashboards for security data), and playbooks (automated response workflows that trigger when an alert fires). There are hundreds of items across dozens of categories, organized by data source and threat type.
The queries are written in a language called KQL, short for Kusto Query Language, which is the query syntax used in Microsoft's cloud logging and analytics platform. Teams can import these files directly into their Sentinel workspace, use them as starting points, or adapt them to their own environment.
The repository is run by Microsoft but open to community contributions. Anyone can submit new detection rules or improvements to existing ones by creating a pull request. When a pull request is submitted, automated checks validate that the YAML structure is correct and that the KQL syntax is valid before a human reviewer looks at it.
For non-technical stakeholders: if your organization uses Microsoft Sentinel and someone mentions pulling content from this repository, it means they are adding pre-built security rules and dashboards from the official Microsoft community library rather than writing everything from scratch.
Where it fits
- Import pre-built detection rules into Microsoft Sentinel to automatically flag suspicious activity without writing queries from scratch.
- Run hunting queries to manually investigate a potential threat across your organization's log data.
- Set up automated response playbooks that trigger when a security alert fires to contain threats faster.
- Contribute custom detection rules or improvements to the community library via pull request.