If the security is your top concern when browsing the web world then the best browser available is not other than Microsoft Internet Explorer. Now the best part of it that Microsoft has recently made available the downloads of the Beta version of the new Internet Explorer.

So if you would like to experience the latest features which would be finally included in the final release, you can try a download from the link here.
Meanwhile the main features which are widely discussed are as follows:

1. Hardware Acceleration to use your system to the fullest
2. Improved UI so that the full concentration remains on the sites
3. Seamless with Windows 7, to enjoy all the features of Windows 7
4. HTML 5 support