Cyber Criminals are using pirated versions of Windows 7 RC to take control of computers and increase their botnets.  The pirated versions of the operating system became available through Torrent and news group sites, shortly after Microsoft released the RC version earlier this month.

The Trojans contained in the pirated versions are, apparently, very hard for signature based detection systems to detect, but are exposed by their botnet activities.

And, once again, the moral of the story is, if you want to try out the new operating system, make sure that you down load Windows 7 RC from the official Microsoft site.