Twitter suffered a one-two punch today as they were both DDOSed and targetted as a vector for a new Koobface virus payload.
Users are directed to a “Facebook” like page that has a link requesting that you “Upgrade” your flash player. When a user clicks it, they are immediately infected and their Twitter account used to post a message that directs more people to the fake Facebook page.
ZDNET Summary
Koobface analysis at Kaspersky Labs
I would advise all of my customers to be very careful when “installing” software today especially, and be sure to check the web address looked at the top of your browser. Always check that the web address at the top of your browser matches the expected page you requested to load. For instance if you think you are on Facebook and your browser is NOT showing “Facebook.com”, chances are its a fake.
