Visual Studio plug-in to detect XSS in .NET code Microsoft just released XSSDetect, which is a free VisualStudio plugin designed to detect XSS vulnerabilities in managed code. Download XSSDetect from Microsoft http://www.microsoft.com/downloads/details.aspx?FamilyID=19a9e348-bdb9-45b3-a1b7-44ccdcb7cfbe&displaylang=en