Good Gear Guide
In Pictures: 20 notorious worms, viruses and botne...
Koobface (an anagram for Facebook) made headlines in 2008.
"It spread by pretending to be the infected user on social networks, prompting friends to download an update to their Flash player in order to view a video. The update is a copy of the virus," explains Lovet.
In Pictures: 20 notorious worms, viruses and botnets