Michael is a Microsoft MVP and expert on Windows security and PowerShell. He is best known for inventing the Shadow Credentials attack primitive and creating the Directory Services Internals (DSInternals) PowerShell module. He is also the author of the Delinea Weak Password Finder (formerly Thycotic) and the DSInternals.Passkeys PowerShell module. Michael enjoys sharing his knowledge during Active Directory security assessments, workshops, and tech talks. He presented his security research at many international conferences, including Black Hat Europe, BSides Lisbon, HipConf New York, SecTor Canada, and TROOPERS.