You can enhance the security of your web browser by following the recommendations below:
Internet Explorer can be automatically updated using the Software Update feature for the Windows operating system. For step-by-step information for Windows XP and Vista, see the Turn on Automatic Updates page.
Internet Explorer allows you to set different security levels for different security "zones." Setting the security level to Medium for the Internet zone provides safety when browsing while still allowing most web sites to function without interference.
It's a good idea to disable popups in your browser because many web sites use popup windows to run malicious software.
Your web browser stores a copy of some pages on your local disk. This is called caching. For some secure web pages, this disk copy may be readable. It's a good idea to turn off caching for secure pages so unencrypted versions of those pages are not being stored on your disk.