Cyber attacks and IT breakdowns threaten every organization. The incidents accumulate and often form the prelude to complex, existence-threatening crises. This book helps not only to manage them, but also to prepare for and prevent cyber crises. Structured in a practical manner, it is ideally suited for crisis team members, communicators, security, IT and data protection experts on a day-to-day basis. With numerous illustrations and checklists. This book is a translation of the original German 1st edition Cyber Crisis Management by Holger Kaschner, published by Springer Fachmedien Wiesbaden GmbH, part of Springer Nature in 2020. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.