Sean Metcalf is founder and CTO at Trimarc (www.TrimarcSecurity.com), a professional services company which focuses on improving enterprise security. He is one of about 100 people in the world who holds the Microsoft Certified Master Directory Services (MCM) certification, is a Microsoft MVP, and has presented on Active Directory & Microsoft Cloud attack and defense at security conferences such as Black Hat, BSides, DEF CON, and DerbyCon. He currently provides security consulting services to customers and posts interesting Active Directory security information on his blog, ADSecurity.org. @Pyrotek3