GFI Software reveals continuing high levels of Trojan and rogue malware circulating during December. Data reveals a surge in activity, boosted by themed activity around the Christmas and New Year holiday period. Themed attacks, along with themed SEO poisoning and fake application installs, are firmly established as a successful means for malware creators to distribute malcode and create disruption for organizations and families alike. The top 10 data is compiled from monthly scans performed by GFI’s anti-malware solution, VIPREAntivirus, and its antispyware tool, CounterSpy, as a service of GFI Labs .
Source: https://thehackernews.com/2011/01/december-top-10-malware-list.html