XSS Warning - A Security Extension/Add-on for Firefox
XSS Warning is a extension/add-on for Firefox that filters malicious values to prevent Cross Site Scripting (XSS) attacks by malicious URLs (assuming you have Javascript enabled).
XSS Warning 0.1.8 beta protect from:
URL attack
Redirect attack
Link code injection
Compatible with Firefox: 1.5 – 2.0.0
You can install and read more about XSS Warning here:
http://www.gianniamato.it/project/extension/xsswarning/



