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Nicolas Blank

Nicolas Blank
Nicolas is the founder, as well an architect, author and speaker focused on Office 365 and Azure at NBConsult. Nicolas is a Microsoft Certified Master for Exchange and Office 365, Microsoft MVP (Most Valuable Professional) for Microsoft Office Apps and Services since March 2007. Nicolas has co-authored “Microsoft Exchange Server 2013: Design, Deploy and Deliver an Enterprise Messaging Solution”, published by Sybex.

Recent Posts

A single vendor app credential connects to seven Microsoft 365 tenants, above a long-tail chart of app permissions granted under older guidance.

ConnectWise Cloud Backup Breach and the Long Tail of Previous Best Practices

October 20, 2026 •Nicolas Blank

Last updated: 21 October 2026. I'll update this post as the investigation develops.

Update, 21 October 2026: ConnectWise has begun restoring Cloud...

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Entra User Classification

Member, Guest, and Wrong: Classifying Entra Users the Practical Way

May 7, 2026 •Nicolas Blank

The report that is nearly right...

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Commvault Metallic Vulnerability

Commvault Metallic Vulnerability (CVE-2025-3928) Exposed OAuth Credentials

August 8, 2025 •Nicolas Blank

Backup applications are designed to protect your data, but when over-permissioned, they can become high-value targets for threat actors. I’ve been...

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Embracing Zero Trust for Application Security in Entra ID

Embracing Zero Trust for Application Security in Entra ID: An Incremental Journey

November 7, 2024 •Nicolas Blank

In our previous webinar on this topic, Zero Trust for Application Security in Entra ID, we made the point that in a cloud landscape, with a massive...

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