According to Yahoo:

"An Eastern European pack of cyber thieves known as the Rove group hijacked at least four million computers in over 100 countries, including at least half a million computers in the U.S., to make off with $14 million in "illegitimate income" before they were caught, federal officials announced today.

The malware allegedly used in the "massive and sophisticated scheme" also managed to infect computers in U.S. government agencies including NASA and targeted the websites for major institutions like iTunes, Netflix and the IRS -- forcing users attempting to get to those sites to different websites entirely, according to a federal indictment unsealed in New York today. "