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 as well as protect 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. This ensures important files and folders are kept after a reboot and files you do not want, can not be kept. Some of the advantages of Shadow Defender include a computer safe from malicious activities and unwanted changes, to test out software and to avoid unwanted changes by shared users.