Benefit from the authors' experiences! With this book, you will gain current and reliable practical knowledge on IT security management in companies and authorities. The structure and content of the work have proven effective in the training and further education of IT security officers. The inventory of all information assets, the formulation of security objectives, and the creation of guidelines and security concepts are presented clearly and understandably. Through numerous practical examples, you will learn everything about risk analyses and assessments, as well as important security measures in the areas of organization, law, personnel, infrastructure, and technology. In the fourth edition, alongside many updates and expansions, particularly regarding the use of mobile IT systems, the chapter on inventorying has been completely revised.