Every time you download a file from the Internet there is a risk that your computer gets infected by virus or another malware. But web browsers and operating systems are getting better and better in their effort to protect a computer against viruses / malware, and in Windows 8 there is a feature named Windows SmartScreen that helps protect your system against malicious software that has been downloaded from the Internet. Windows SmartScreen is reputation-based protection system, and how it works is described in this article on our web site:
> Windows SmartScreen – Anti-Malware Protection in Windows 8