First Top Twenty lists malicious programs, adware and potentially unwanted programs that were detected and neutralized when accessed for the first time, i.e. by the on-access scanner. For the third month in a row the top five programs have led the rest of the rating by some distance. January’s rating remains a kaleidoscope of latest cybercriminal creations. The second Top Twenty presents data generated by the web antivirus component, and reflects the online threat landscape. This ranking includes malicious programs detected on web pages and malware downloaded to victim machines from web pages.”]
Source: https://securelist.com/monthly-malware-statistics-january-2010/36282/