malware
Keeping Software Updated is Important

Just as it's important to visit Windows Updates on a regular basis or have Automatic Updates enabled, it's also necessary to run the latest versions of software to ensure that your PC is protected. Of particular importance is always running the latest versions of Flash Player, Java, Adobe Reader and QuickTime. They have all experienced vulnerabilities in the past that have allowed PCs to become compromised while running the vulnerable versions.
Malware Doesn’t Stand A Chance
Your computer is constantly at risk from malware such as Viruses, Trojans, Spyware and more. Anti-Virus software keeps Viruses and many Trojans at bay, but there are a slew of other baddies out there.
Malwarebytes' Anti-Malware specializes in finding and eradicating malware. The program scans your computer for malware and if found, gives you the option to remove it.