This book presents the most interesting talks given at ISSE 2014 - the forum for the interdisciplinary discussion of how to adequately secure electronic business processes. The topics include: - Trust Services, eID and Cloud Security - BYOD and Mobile Security - Cybersecurity, Cybercrime, Critical Infrastructures - Security Management, CISO Inside - Privacy, Data Protection, Human Factors - Regulation & Policies 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. The reader may expect state-of-the-art: best papers of the Conference ISSE 2014. Content Trust Services, eID, Cloud Security & Management - BYOD, Mobile Security & Applications - Cybersecurity, Cybercrime, Critical Infrastructures - Security Management, CISO's Experiences - Human Factors, Awareness & Privacy - Regulations and Policies Target Groups Chief Information Security Officers Developers of Electronic Business Processes IT Managers IT Security Experts Researchers Editors Norbert Pohlmann: Professor for Information Security and Director of the Institute for Internet Security at the Westphalian University of Applied Sciences Gelsenkirchen. Additionally he is president of the IT Security Association TeleTrusT. Helmut Reimer: Senior Consultant, TeleTrusT Wolfgang Schneider: Senior Adviser, Fraunhofer Institute SIT.