This book contains a broad spectrum of carefully researched articles dealing with IT-Security: the proceedings of the DeepSec InDepth Security conference, an annual event well known for bringing together the world's most renowned security professionals from academics, government, industry, and the underground hacking community. In cooperation with the Magdeburger Institut für Sicherheitsforschung (MIS) we publish selected articles covering topics of past DeepSec conferences. The publication offers an in-depth description which extend the conference presentation and includes a follow-up with updated information. Carefully picked, these proceedings are not purely academic, but papers written by people of practice, international experts from various areas of the IT-Security zoo. You find features dealing with IT-Security strategy, the social domain as well as with technical issues, all thoroughly researched and hyper contemporary. We want to encourage individuals, organizations and countries to meet and exchange, to improve overall security, understanding and trust. We try to combine hands-on practice with scientific approach. This book is bringing it all together.