Maester 3.0 merges into main on Thursday, 8 October 2026 at 10:00 UTC (8 pm AEST). From that moment the preview build of Maester on the PowerShell Gallery is Maester 3.0, and 3.0 has breaking changes.

If you're using Maester interactively and want to see what's coming, the preview is exactly where we want you. Try it, and tell us what breaks.

Maester 2.3 is here.

2.2 went wide. 2.3 goes deep: the objects behind every failed check, AI agents in Microsoft Entra, the latest CIS benchmark, the Macs and code repositories in your estate, and a hard look at how Maester itself handles the data it collects from your tenant.

Maester 2.2 is here, and it's our biggest expansion of security coverage yet.

Since 2.1.0 shipped in May, the community has kept up an incredible pace: 261 commits and 311 new tests. Maester now stretches all the way from your on-premises Active Directory to AI data security with Microsoft Purview, SharePoint Online, GitHub, Global Secure Access, and Intune.

When we launched Maester 2.0, it was our biggest release yet. Since then the project has kept moving: more than 540 commits, 1,900 files touched, and the published test documentation has grown from 128 to 168 tests.

This release brings Maester into more of the places security teams live every day: Azure DevOps, Microsoft Defender for Endpoint, Copilot Studio, entitlement management, multi-tenant operations, and the report experience itself.

We're thrilled to announce a major expansion of Maester's security testing capabilities—comprehensive Active Directory (AD) security testing is now available! This release adds 300+ new tests across 20 categories, giving you unprecedented visibility into your on-premises and hybrid AD infrastructure.

We are excited to announce that Maester now supports multi-tenant reports! Run your security tests across multiple tenants and view the results in a single report. 🚀

Azure DevOps tests are now available in Maester!

We're excited to announce Maester 2.0 - our biggest release yet! With over 400 commits since version 1.3.0, this release brings powerful new capabilities for Microsoft 365 security testing.

When we started with Maester, we were in the luxurious position to use a code signing certificate for all published versions. This, sadly, ends today.

Today we are happy to announce that it is now easier to assess your M365 environment with specific types of tagged tests. Key Maester tags are now less ambiguous, and a new function makes it easy to see all of the tests associated with each tag! 🏷️