The "Web Application Hacker's Handbook: Finding and Exploiting Security Flaws" is a comprehensive textbook authored by Marcus Pinto and Dafydd Stuttard. Published by Wiley & Sons, this 912-page trade paperback explores the subject of computer security, specifically focusing on web application vulnerabilities. With a publication year of 2011, this handbook serves as a valuable resource for individuals interested in understanding and addressing security flaws in online applications. Written in English, this textbook delves into the complexities of online safety and privacy, making it a must-have for those looking to enhance their knowledge in the field of security.