Book excerpt: Adequate information security is one of the basic requirements of all electronic business processes. It is crucial for effective solutions that the possibilities offered by security technology can be integrated with the commercial requirements of the applications. Here the positions of the experts involved are very diverse: some strive for as much security as possible, others only for as much security as is necessary. The conference ISSE (Information Security Solutions Europe) is the outstanding forum for the interdisciplinary search for sustainable compromises and for the presentation of concepts which hold up in real life. This book offers the most recent papers in the area of strategies, technologies, applications and best practice.