Solving False Positive Problem in Client Side XSS Filter

Cross Site Scripting (XSS) is the most popular security problem in modern web application. In Cross Site Scripting, attacker uses a trusted site and injects a vulnerability script in the client or server side browser. This code when executes sends a secure information to attacker. This type of attack can be blocked by using server side filters and client side filters. In this work we have developed a two pass client side filter. This filter solves the well known problem of False Positive in various client side filters. We have proposed an architecture and algorithm that solves false positive problem.