About

Olivier Mathieu, security architect at Wakers. Defender XDR, Sentinel, Purview.

Hi, I'm Olivier Mathieu (a.k.a. frog), security architect at Wakers. I design and deploy Microsoft security for organizations: Defender XDR, Microsoft Sentinel, Purview and Entra ID.

Before that I spent several years in consulting and incident response on Microsoft 365, Entra ID, Active Directory and Azure. That's where most of the content here comes from: what attackers really do in a tenant, and how to catch them.

What you'll find here

Microsoft 365 & Entra ID: the attack matrix of a tenant, email security and hardening.
Compliance: NIS2 and DORA mapped to Microsoft controls.
Tools and side projects: PowerShell, Sysinternals, mobile forensics.

The blog is for SOC analysts, IT admins and anyone who has to defend a Microsoft 365 tenant.

Certifications

SC-100 SC-200 SC-300 AZ-500 AZ-104 BTL1

Recommended resources

AADInternals by Dr. Nestori Syynimaa
Inversecos
ROADtools by Dirk-jan Mollema

Get in touch

Logo by Nunny on rawpixel. Opinions are my own and not those of my employer.