McAfee Antivirus Plus 2015 - 3 PCs Award-Winning Anti-Virus Protection - McAfee Antivirus Plus leverages the power and threat intelligence of more than 100 Million McAfee customers world-wide to identify, quarantine, and stop the latest threats from harming your PC. Optimize Your PC's Performance - Improved! McAfee QuickClean and Vulnerability Scanner features speed up your PC and browser while ensuring you're running the latest versions of your favorite application Wi-Fi Protection - Improved! Features our powerful two-way Firewall (Net Guard) to protect against dangerous downloads, and Wi-Fi network intrusion notifications to alert you when unwanted guests are stealing Wi-Fi bandwidth.