Akronix, a company that provides IM security and management tools, reports that Q3 2005 attacks on IM networks averaged more than one per day.
The report mentions that IM borne viruses were "often mutations of other varients, however in September, we had seven new viruses." The report did not mention which IM networks were under attack, such as AIM, Yahoo!, or MSN. The report suggests that organizations examine the use of IM on their networks, and prepare to defend their systems from attacks.
According to Akonix, August's Kelvir.hi worm was the first to ask the client software the local language settings, and sent a text message based on the language settings. Again, it was not reported on which clients were affected by this attack.
It is not known about how many of the millions of IM users are aware that most of their communications are not encrypted when using IM, and that sending of files through them, along with other automated features could introduce attacks onto a computer system.