Stephan is a security researcher at the Testlab mobile security group at the Fraunhofer Institute for Secure Information Technology (SIT). His main focus is Android application security testing and IoT devices. He develops new static and dynamic analysis techniques for app security evaluation. He has found different vulnerabilities in well-known Android applications and the AOSP. He has delivered talks at conferences including DEF CON, HITB, AppSec and Virus Bulletin. In his spare time he enjoys teaching students Android hacking techniques.

Twitter: @teamsik Website: www.team-sik.org