From the reviews: ""Schryen’s book basically contains his German habilitation dissertation. … This work is a methodical analysis of the potential, limitations, advantages, and drawbacks of antispam measures. ... In summary, Schryen provides a comprehensive overview of the state of the art of the antispam field. An excellent work for those working in this field. Summing Up: Highly recommended. Faculty; researchers; professionals."" (C. Tappert, CHOICE, Vol. 45 (6), 2008) ""This book investigates the problem of email spam … . It is well written and important concepts … are exhaustively outlined along with relevant code headers and sensible discussions. I was actually very impressed with the work here and once I started to delve into the contents of this book, I did discover a lot more about this field … . a tour de force of anti-spam measures and I would hope that this book will become a bedtime read for researchers in the field."" (Kevin Curran, Informer, Issue 26, Spring, 2008) ""This book … reviews the history of spam, assesses the current situation and the economic significance of spam, analyzes current anti-spam measures, and proposes changes to the email infrastructure framework to address spam. … Anyone frustrated by spam will find the book to be an excellent reference … . The book is a timely review of the current state of spam email on the Internet. It contains thorough references, several appendices, and a good index."" (David B. Henderson, ACM Computing Reviews, January, 2009)