Many Windows users believe they don’t need to pay for antivirus software, and most Mac and Android users think they don’t need protection at all. Virus protection software for Windows XP is designed to be lighter than other security systems, allowing you to use it with older processors. Antivirus scanners are often considered to be obsolete – nevertheless viruses, worms and trojans are a serious threat for Windows computers. It file and folder protection hardens your browser, plug-ins, and other targets attackers frequently target, defending you against the most common attack techniques rather than attempting to catalog and defend against every known piece of malicious software. Home use of the antivirus products will not only protect personal PCs, but will also potentially lessen the threat of malicious logic being introduced to the workplace and compromising DOD networks.
From Avast Software: Avast Free Antivirus is happy to provide its users the tools and features they need to keep their PC from getting sick with malware. Not all antivirus solutions are equal; ControlNow detects viruses that our previous product failed to. It does password protecting folder so quickly and effectively – for comprehensive, efficient protection that does not slow down your PC or laptop. The next great differentiator between Windows XP virus protection programs comes down to how system-intensive the software is on your computer.