"Judging by the high level of activity by Vapsup in the past month, the cyber criminals behind this adware should be getting a huge payday," said Derek Manky, security researcher for Fortinet.
Additional malware trends observed during this period include the following:
- Online gaming Trojan activity continues in Asia, still concentrated in Taiwan and China
- An Iframe injection campaign runs strong through Iframe.DN, pointing to Korean servers
- Parasitic file infector, Virut.A, which made itself known in March remains in the top five for three consecutive months, showing longevity
Top Ten Individual Threats
- W32/Netsky!similar
- Adware/Vapsup
- HTML/Iframe_CID!exploit
- W32/Virut.A
- W32/Pushdo.EV@mm
- W32/OnLineGamesEncPK.fam!tr.pws
- HTML/Iframe.DN!tr.dldr
- W32/MyTob.BH.fam@mm
- W32/OnLineGames.ADRE!tr.pws
- W32/Zafi.E@mm
- Netsky
- MyTob
- Virut
- Pushdo
- MyDoom