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Louis Mastelinck

Louis Mastelinck
Louis Mastelinck is a Belgian Soc analyst and security consultant with a passion for keeping the digital world secure. Specializing in incident response and the Microsoft Security stack (MDE, MDO, MDI, MDCA, Sentinel, ...), he excels at neutralizing threats and protecting organizations. As a Microsoft MVP and GCFA-certified professional, Louis brings a wealth of expertise to the table.
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Recent Posts

Connect to the Microsoft Graph API securely using a Function App and Azure Key Vault

Connect to the Microsoft Graph API securely using a Function App and Azure Key Vault

October 24, 2024 •Louis Mastelinck

In a previous blog post, we demonstrated how to authenticate to the Microsoft Graph API using two different methods. The focus was on running a local...

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Authenticating to the Microsoft Graph API with PowerShell

Authenticating to the Microsoft Graph API with PowerShell

August 6, 2024 •Louis Mastelinck

I still often encounter the use of user accounts to run automation, scripts, and applications to connect with Microsoft services. By user account, I...

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Laptop with email restriction icons

How to Restrict Microsoft Graph API Access to Mailboxes

June 12, 2024 •Louis Mastelinck

The Microsoft Graph API offers developers and IT professionals a platform, providing access to an extensive array of Microsoft 365 services and data...

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The Incredible Power of Application Registration & Ownership

The Incredible Power of App Registration & Application Ownership

April 26, 2024 •Louis Mastelinck

App registration within Entra ID can be used to manage the permissions granted to specific apps and determine which users within your tenant can use...

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