TDL-4 variant spreads click-fraud campaign

A click-fraud campaign – in which attackers redirect users from legitimate ads on major sites, like Facebook and YouTube, to URLs where they can receive money for clicks – has been launched using a new TDL-4 malware variant.

TDL-4 rose to infamy in 2011, when researchers discovered that the malware supported a botnet of more than four million infected computers, which were primarily in the United States.