Ru Campbell MVP

Microsoft Security, Identity, Compliance, and Management

[Updated August 2026] MDE Feature Comparison by OS

August 4, 2026
Three months after the last big refresh, I've worked through Microsoft's Defender documentation again and updated my cross-platform comparison of Microsoft Defender for Endpoint features by operating system. The big changes relate to AI agent security, ASR mi...
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[Updated May 2026] MDE Feature Comparison by OS

May 5, 2026
Paul, Ian, and I just finished publishing the second edition of MDE In Depth, so to coincide, I've refreshed the comparison of MDE features and capabilities by OS type. Long overdue. At the same time, I've migrated my blog from Bluehost + WordPress to a Hugo...
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MDE Feature Comparison by OS

May 2, 2026
Legend | Symbol | Meaning | | --- | --- | | ✓ | Supported on all currently supported versions of that OS in the current Microsoft documentation (unless otherwise noted) | | 1709+ (version value) | Minimum OS version/build explicitly called out in the current...
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Microsoft 365: The Essential 10 Security Considerations

November 28, 2025
When we talk about Microsoft 365 security, we are talking about two things: - Securing Microsoft 365 the platform, such as Exchange Online, SharePoint Online, Microsoft 365 Copilot; ensuring they are hardened and monitored in proportion to risk appetite. - Us...
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Thoughts on Copilot for Security’s Early Days

May 13, 2024
April 1, 2024, seen the release of Microsoft Copilot for Security to general availability (GA). It is a generative AI solution integrating with Defender XDR, Entra, Purview, and Intune. Just over a month later, it's time to write down some thoughts. In cybers...
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