Twitter knocked offline by DDoS attack; Koobface returns with a twist | Zero Day | ZDNet.com - http://blogs.zdnet.com/securit...
"According to Kaspersky Lab’s Stefan Tanase (see important disclosure), the new wave of Koobface attacks includes a change in tactics.  The hackers are now using a well-designed Facebook lookalike page and unique Twitter messages to trick Windows users into downloading scareware programs. This Twitter Search shows examples of the attacks underway. A user clicking on a malicious link in Twitter is presented with a fake Facebook page with what purports to be an embedded video file. The target is presented with an Adobe Flash Player upgrade message but this too is fake and dangerous. If the user attempts to apply the Flash Player update, the machine is infected with rogue security software that badgers the user into paying for a disinfection tool." - Dan Smith