Security Talk: Using Standards-Based Internet Explorer Features to Protect Apps

If one is building mash ups and other Web applications, what does one need to know to make sure that one is building secure applications that don't expose security vulnerabilities? What does one needs to consider when building the applications and using features from HTML5, HTML4.01, and other important features of the browser? This podcast helps to learn how to use standards-based Windows Internet Explorer features to protect the applications one develops.