Web Hacking Challenges

This is a list of some web hacking challenges for learning purposes, there are many levels and several technologies to hack like XSS, SQL-Injection, Flash, Java, HTML,.....

http://www.hackthissite.org
http://www.hack-test.com/

http://www.hellboundhackers.org/
http://www.hack4u.org/index.php?choices=1&code=level0
http://xss-quiz.int21h.jp/

Have fun ....