Prior to joining CUNY, Dietrich was Computer Science faculty at Stevens Institute of Technology, a senior member of the technical staff at the Carnegie Mellon University Software Engineering Institute and CERT, on the CMU CyLab/Information Networking Institute faculty, a member of the Center for Usable Security & Privacy (TCSP), and a Senior Security Architect at the NASA Goddard Space Flight Center. His research area is cybersecurity, including network and computer security, privacy, botnets and DDoS. He has co-written a textbook on DDoS attacks and defenses and provided leadership and guidance to academic cybersecurity conferences, workshops, and seminars inside and