Dirk-jan Mollema

Entity category: person

BigTech Companies

Microsoft Entra ID Flaw Let Attackers Hijack Company Tenants

September 27, 2025
Diagram of Microsoft Entra ID showing unified identity management for users, devices, and apps.

A critical vulnerability (CVE-2025-55241) in Microsoft's Entra ID could have allowed attackers to gain full control over an organization's tenant…

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BigTech Companies

Microsoft’s Entra ID Flaws: A Near-Catastrophic Security Risk

September 21, 2025
Silhouette of a hand holding a padlock in front of the Microsoft logo, symbolizing security.

Security researcher Dirk-jan Mollema discovered two severe vulnerabilities in Microsoft’s Entra ID that could have allowed attackers to gain global…

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BigTech Companies

Microsoft Entra ID Flaw: The Critical Security Risk You Can’t Ignore

September 18, 2025
Abstract art depicting a textured, teal and black shape resembling a stylized gemstone or ice crystal.

Security researcher Dirk-jan Mollema discovered two critical vulnerabilities in Microsoft Entra ID that could allow attackers to gain global administrator…

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BigTech Companies

Microsoft Warns Admins: Patch Critical Exchange Flaw (CVE-2025-53786)

August 9, 2025
Microsoft Exchange logo: a stylized 'E' in white on a blue square, set against a dark blue, abstract background.

Microsoft warns of a critical Exchange Server vulnerability (CVE-2025-53786) allowing privilege escalation in hybrid cloud environments due to a shared…

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