David R. Miller holds many certifications, including SME, MCT, MCITPro, MCSE Windows 2003, CISSP, LPT, and CEH. Performing as a Subject Matter Expert (SME), David has written numerous certification curricula, books, and information systems certification exams for companies such as Microsoft and Logical Security. Specializing in security topics, he has written and performed in several technical and security-related training videos. He currently writes, lectures, and consults on these topics.