http://www.amazon.com/The-Web-Application-Hackers-Handbook/dp/8126533404/ The Web Application Hacker’s Handbook: Finding and Exploiting Security Flaws http://www.amazon.com/Hacking-Web-Apps-Preventing-Application/dp/159749951X/ Hacking Web Apps: Detecting and Preventing Web Application Security Problems http://www.amazon.com/Hacking-Exposed-Web-Applications-Third/dp/0071740643/ Hacking Exposed Web