Abstract: The Fraunhofer Group for Defense and Security has established a successful conference series in the emerging field of security research.After conferences in the cities of Karlsruhe and Berlin, the 2012 edition went to Bonn, the former capital of Germany.The conference was held in the World Conference Center Bonn in the former premises of the Bundestag, the German parliament -a perfect venue for bringing together decision makers, public authorities, industry, and scientists to discuss new ways of protecting both our freedom and our open society.Numerous presentations were held in the former plenary hall of the Bundestag.The foyer and additional rooms were used for special interest group meetings, poster presentations, and exhibitions.The conference program offered several keynote speeches, panels, and many scientific presentations.The scientific papers accompanying the presentations are included in this book.All the papers were reviewed according to tough scientific standards.They provide a broad overview over the state of the art in security research.My sincere thanks go to the Program Committee, in particular to the Program Co-chairs Nils Aschenbruck, University of Osnabrück, and Michael Meier, University of Bonn, for orchestrating the review process and arranging the scientific program; to Jens Tölle, Fraunhofer FKIE, for handling the publication process and spending hours on making these proceedings look the way you, the reader, expect publications to look in this series by Springer; and to Hans Peter Stuch, Fraunhofer FKIE, for taking care of the local arrangements.Most of all, I thank the authors for providing us with their scientific results, ideas