The Microsoft Anti-Cross Site Scripting Library V4.2 (AntiXSS V4.2) is an encoding library designed to help developers protect their ASP.NET web-based applications from XSS attacks. It differs from most encoding libraries in that it uses the white-listing technique -- sometimes referred to as the principle of inclusions -- to provide protection against XSS attacks. This approach works by first defining a valid or allowable set of characters, and encodes anything outside this set (invalid characters or potential attacks). The white-listing approach provides several advantages over other encoding schemes. This release addresses a vulnerability in the HTML Sanitizer, MS12-007 and adds full support for .NET 4.0 as well as restoring support for .NET 2.0.
Why isn't the download link working on the Microsoft page?
The download link is working for me.