OverTheWire: Wargames : The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of fun-filled games.
XSS Filter Evasion Cheat Sheet - OWASP : This article is focused on providing application security testing professionals with a guide to assist in Cross Site Scripting testing.
XSS (Cross Site Scripting) Prevention Cheat Sheet : The following rules are intended to prevent all XSS in your application. While these rules do not allow absolute freedom in putting untrusted data int...
HTML Purifier : HTML Purifier is a standards-compliant HTML filter library written in PHP. HTML Purifier will not only remove all malicious code (better known as XSS)...
Run your own identity server : Running your own identity server allows you to act as an OpenID Provider. You could run one just for yourself, for a community of users or, if you wis...
