You can help prevent other people from accessing your browsing information by using two privacy features in Windows Internet Explorer: Tracking Protection and InPrivate Browsing. Read more about how they work at Protect your privacy using Internet Explorer 9
Tracking Protection- helps prevent websites from gathering information about your web browsing.
InPrivate Browsing – enables you to surf the web without leaving a trail in Internet Explorer. This helps prevent anyone else who might be using your computer from seeing what sites you visited and what you looked at on the web. You can start InPrivate Browsing from the New Tab page or the Safety button.