Graham Cluley
Thousands of Twitter users are finding that their accounts have been tweeting out malicious links without their permission, pointing to a fake anti-virus attack.
If you make the mistake of clicking on one of the malicious goo.gl links you are ultimately taken to a website which attempts to scare you into believing that you have a virus problem on your computer. You are then frightened into installing malicious code on your PC, and asked to pay money to disinfect your systems.
http://nakedsecurity.sophos.com/2011/01/20/fake-anti-virus-attack-twitter-via-goo-gl-links/
