The book "Anti-Spam Measures" by Guido Schryen offers a comprehensive analysis and discussion of strategies to combat spam in various contexts. It is based on the author's habilitation thesis and is aimed at an academic audience as well as professionals dealing with the challenges and solutions in the field of spam prevention. The content of the book is designed to illuminate both theoretical and practical aspects, with the author drawing on his experiences and the support of colleagues. Readers will gain insights into the development of anti-spam measures and their implementation in different systems. The book is a valuable resource for anyone involved in information security and the optimization of communication systems.