Concentrating on the process of breaking and protecting web applications written in PHP, this book also considers related web programming topics such as client technologies (HTML, cookies, JavaScript), application protocols (HTTP, SMTP), SQL query language, and the breaking and protecting of the Apache web server. Because these techniques can only be achieved by practical work, The book is divided into two parts: one covering the problem (puzzles) and one devoted to solving the problem. Evaluating the main problem for many web programmers protecting their applications from being hacked—that they think differently than hackers—this book allows the reader to think like a hacker and understand the techniques they use.   About the author maxim Kuznetsov is the director of information technologies and deputy director of long range planning for informsvyazstroy and the manager of the software information technologies Studio. He is the co-author of several scientific works in the areas of radio spectroscopy, photo Chemistry and photo Physics, mathematical modeling, scientific and technical software development, and molecular quantum mechanics. Igor simdyanov is the lead programmer of the software development Department at informsvyazstroy. He is the co-author of 42 scientific works covering mathematical modeling of photo physical processes, scientific and technical software development, and molecular quantum mechanics. Cdrom:   The accompanying CDROM contains distributions of PHP, Apache, and MySQL for Windows and Linux and the source codes for all of the solutions discussed.