Stefan Schumacher is the president of the Magdeburg Institute for Security Research and editor of the Magdeburg Journal for Security Research in Magdeburg/Germany. He started his hacking career before the fall of the Berlin Wall, on a small East German computer with 1.75 MHz and a Datasette drive. Ever since he liked to explore technical and social systems, with a focus on security and how to exploit them. He was a NetBSD developer for some years and involved in several other Open Source projects and events. He studied Educational Science and Psychology, has done a lot of unique research about the Psychology of Security with a focus on Social Engineering, User Training and Didactics of Security/Cryptography. Currently he's leading the research project Psychology of Security,focusing on fundamental qualitative and quantitative research about the perception and construction of security. He presents the research results regularly at international conferences like AusCert Australia, Chaos Communication Congress, Chaos Communciation Camp, DeepSec Vienna, DeepIntel Salzburg, Positive Hack Days Moscow or LinuxDays Luxembourg and in security related journals and books.