WHITEPAPER

Microsoft 365 & Intune Security Hardening Guide Preventing Cloud Management Plane Attacks

A practical implementation guide.

A practical implementation guide for security teams to harden Microsoft 365 and Intune against destructive management-plane attacks.

This white paper was created in response to the March 2026 Stryker incident, where attackers reportedly abused legitimate Microsoft 365 and Intune administrative functions to execute a large-scale device wipe. The lesson is clear: when the cloud management plane is compromised, traditional endpoint controls may not be enough.

What’s inside

This guide gives security and IT teams practical, immediately actionable steps to reduce the risk of tenant-level compromise and mass device destruction.

What You’ll Learn how to

The white paper also breaks down the four common misconfigurations that make these attacks possible and the top actions to implement first to materially reduce risk.

Why It Matters

A compromised Intune or Microsoft 365 admin account can become the cloud equivalent of a domain admin compromise. Attackers can abuse legitimate tools, APIs, and permissions to wipe devices, change policies, revoke access, and operate at scale. The white paper focuses on protecting that cloud control plane with the same rigor organisations once applied to on-premises domain controllers.

Who should read this

This guide is for:

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