Shadow Defender can run your system safely in a virtual environment, or sandbox, called 'Shadow Mode.''Shadow Mode' works like other sandbox programs by running everything in a virtual environment with no changes to your operating system. It can prevent all viruses and malware from infecting your regular desktop as well as protecting your privacy. If you have any problems, simply reboot and that will restore your PC back to its original state, like nothing happened. You can even specify which files and folders are permanently saved to the real environment ensuring that the important ones get retained after a reboot while the less important ones are not. Some of the advantages of Shadow Defender include a computer safe from malicious activities and unwanted changes - perfect for testing out software and avoiding unwanted changes by shared users.