Facebook users often share warnings about a new virus or worm storming across the network. Here are a few examples of the warnings posted on the social networking site. A Trojan worm called Knob Face is a Trojan worm that will steal your info, invade your system and shut it down! Do not open the link Barack Obama Clinton scandal. If Smartgirl 15 adds you, dont accept it; it is a virus. If somebody on your list adds her then you will get the virus too!! Copy and paste to your wall please”]
Source: https://grahamcluley.com/truth-facebook-knob-face-worm/