PandaLabs warned that 40% of all fake antiviruses ever have been created this year. That is, ever since this type of malicious code was first reported four years ago, 5,651,786 unique rogueware strains have been detected, out of which 2,285,629 have appeared from January to October 2010.

If we compare the number of rogueware specimens to the total number of malware strains included in their database, 11.6% of all samples correspond to fake antiviruses.

More: http://www.net-security.org/malware_news.php?id=1529