Steven is currently a researcher at the Fraunhofer Institute for Secure Information Technology (SIT) in Darmstadt. He has received a PhD, a master's degree in computer science, and a master's degree in IT Security from Technische Universität Darmstadt. Steven is one of the core maintainers of the Soot open-source compiler framework that is now used for static analysis and program instrumentation by various research groups around the world. He is also actively maintaining the FLOWDROID open-source static data flow tracker. His main research interests center on (mobile) security and static and dynamic program analysis applied to real-world security problems, an area in which he has published various research papers over the last years.