Dr. Altaf Shaik, is currently a senior researcher at the Technical University of Berlin in Germany. He conducts research in telecommunications, esp., 6G, 5G radio access and core network security. He combines a professional background in programming, wireless communications and offensive network security. His renowned research exposed several vulnerabilities in the commercial 4G and 5G specifications and commercial networks that allow attackers to perform powerful attacks affecting millions of base stations, handsets, M2M and NB-IoT devices. Altaf is a frequent speaker at various prestigious international security conferences such as Black Hat USA & Europe, T2, SECT, Nullcon, Hardware.io and HITB and many others. His accomplishments landed him in the hall of fame of Google, Qualcomm, Huawei and GSMA. He also trains various companies and organizations in exploit development, and also building secure mobile networks including their testing and security evaluation.