I have two antivirus in xp operating system. i just love malwarebytes antivirus. malwarebytes is very comport Malwarebytes Anti-Malware's industry-leading scanner detects and removes malware like worms, Trojans, rootkits, rogues, spyware, and more. All you have to do is launch Malwarebytes Anti-Malware and run a scan. It's that simple. Or if you want even better protection, consider Malwarebytes Anti-Malware Premium and its instant real-time scanner that automatically prevents malware and websites from infecting your PC. Either way you're crushing malware and foiling hackers you can download here