Top 10 Malware Threats To Microsoft PCs

10. Spyware

Spyware accounted for 0.2 percent of all malware detections in the fourth quarter of 2012. A program is labeled spyware if it collects information on victims without their consent, such as Web browsing habits. Spyware is often detected in China where pirated software is common. "Although Spyware was the least prevalent category in China, it was more than six times as prevalent there as in the world overall," Microsoft said.