The top menace of the month is Trojan.Clicker.CM, a
pop-up-ad-serving trojan distributed via infected websites. In order to
successfully display the pop-ups containing advertisements, the trojan has
the ability to bypass the Norton Internet Security Pop-up Blocker.

In second place is Trojan.Downloader.WMA.Wimad.N. Despite the
complicated-sounding name, this trojan serves a very simple function: to
load another piece of malware. It does so by pretending to be a helper
application that downloads a “codec” playing a “special type” of WMA file.
Once the user is tricked, it downloads and runs Adware.PlayMp3z.A, an
application meant to take personal information from the computer and use it
for marketing or suspicious practices. When executed, the adware displays a
pop-up with an EULA, in an attempt to convince users of its legitimacy.