Microsoft Defender for Business vs Vigil
Microsoft Defender for Business
microsoft.comVigil
vigil-siem.comSide by side
| Figure | Microsoft Defender for Business | Vigil |
|---|---|---|
| Price from | $0.25/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | Yes |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 3 |
| Spec score · SIEM Software | 8.6 (#3) | 8.2 (#10) |
| Integrations | The product integrates with Microsoft 365 Lighthouse and can work with remote monitoring and management tools and professional services automation software. | The integration catalogue spans SIEM/log search, EDR/XDR, AWS/Azure/GCP, identity, threat intelligence, sandboxes, ticketing, chat, paging, network security, and data pipelines. |
| Support | Microsoft's Defender for Business documentation provides a guide for getting help or contacting support. | Enterprise includes a dedicated Slack channel, custom integrations, custom SLAs, and a SOC 2 report. |
Plans
Microsoft Defender for Business
- Microsoft Defender for Business$3 a month
- Microsoft Entra Internet Access$5 a month
- Microsoft Entra Suite$12 a month
- Microsoft Defender for Business$3 a year
In their own words
Microsoft Defender for Business
Microsoft Defender for Business has no write-up on Specifiction yet; its figures are above.
Vigil
Vigil is a self-hosted SIEM that collects endpoint events, evaluates Sigma detections in real time, and returns structured JSON for AI agents. It runs on Linux, macOS, and Windows, or as a self-hosted service, without requiring a cloud account. Its single binary collects Windows Event Logs or Linux journald and sends batches every five seconds; short-lived enrollment tokens support secure agent onboarding. Vigil includes 41 Sigma rules covering 10 MITRE ATT&CK tactics. Its HQL query language searches event history with aggregations, timelines, endpoint filters, time ranges, and field values. The CLI pauses destructive actions until a person approves them. Vigil Connect extracts selected fields and the untouched raw alert from alerts; it supports Wazuh and Elastic, with Splunk and Microsoft Sentinel listed as coming soon. The Claude Code integration uses npx @vigil/skill and needs no MCP server or running process. The Apache 2.0 open-source plan is free and includes unlimited events. Enterprise support includes a dedicated Slack channel, custom integrations and SLAs, and a SOC 2 report.