Presumably, between 900 and 1,800 Facebook users have been infected by a new worm spreading since Wednesday through Facebook. This nasty worm aims to install malware with keylogger payload on victims’ PC’s.
Once this worm is run, it spreads by creating and sending spam messages to the infected users' friends via the Facebook website. The sent messages include titles such as:
"LOL. You've been catched on hidden cam, yo:”
"Paris Hilton Tosses Dwarf On The Street"
"Examiners Caught Downloading Grades From The Internet".
The spam messages include a link to a random URL. The URL in fact points to a fake YouTube web page that shows a video player along with what looks like a standard browser message to update your Flash in order to watch the clip. Clicking on the button launches the worm installation, which, however, is proactively detected and blocked by eSafe.