Dirk-jan Mollema is a hacker and researcher of Active Directory and Microsoft Entra (Azure AD) security. In 2022, he started his own company, Outsider Security, where he performs penetration tests and reviews of enterprise networks and cloud environments. He blogs at dirkjanm.io, where he publishes his research and shares updates on the many open-source security tools he has written over the years. He previously presented at TROOPERS, DEF CON, Black Hat and BlueHat and has been awarded as one of Microsoft’s Most Valuable Researchers multiple times.