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Securing Microsoft Business Premium Part 06: Securing Email with Defender for Office 365
Sharing is caring — While that is a mantra I follow myself, collaboration needs to be done securely. Email is often the first and most widely used collaboration tool in any organization, which makes Exchange Online a natural place to start when securing collaboration. In today’s work environment, collaboration with others is essential, both internally and externally. To support this, collaboration must be easy for users while remaining secure and manageable for administrators

Sebastian F. Markdanner
Mar 210 min read


The Hidden Steps Microsoft Forgot to Document: Securing Azure App Service Authentication Behind Front Door with Private Link
Today I want to walk through how to configure Azure App Service Authentication when your App Service sits behind Azure Front Door and is accessed through a Private Link. On a dreadful day in october 2025, I received something that most IT people fear - a request from a client! The request included information from the client, that they were struggling with authentication on a Web App deployed behind Azure Front Door using Private Link. What looked like a straightforward setup

Sebastian F. Markdanner
Dec 2, 20257 min read


Mastering Microsoft Entra Authentication Contexts - Part 4: Monitoring and Reporting with KQL & M365IdentityPosture
We’ve covered what Authentication Contexts are, why they matter, and how they help us strengthen access and data security in Microsoft 365. Now it’s time to answer the next question - how do we monitor and report on their usage? Unfortunately, there’s no built-in way to gain that visibility today. Neither Entra ID nor Microsoft 365 provides a simple method to inventory or audit Authentication Contexts across our estate including Conditional Access, PIM and Sensitivity labels

Sebastian F. Markdanner
Nov 3, 20258 min read
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