SmartScreen Filter and the Do Not Track header are easily enabled in Internet Explorer 10.
Do Not Track header. The Do Not Track header sends a signal to websites that you prefer not to have information collected about your visit used to track you as you browse the web. How the sites you visit choose to respond or interpret Do Not Track requests is subject to those sites' privacy practices.
SmartScreen Filter. If a site seems suspicious, you probably shouldn't be downloading apps from it or providing your account or personal information. But sometimes it's hard to tell whether or not a site is legitimate. SmartScreen helps you identify reported phishing and malware sites and also helps you make informed decisions about app downloads.