Law enforcement authorities, working with Microsoft, have arrested dozens of scammers in New Delhi behind fake PC virus pop-up alert ads over the past month (New York Times)

New York Times:
Law enforcement authorities, working with Microsoft, have arrested dozens of scammers in New Delhi behind fake PC virus pop-up alert ads over the past month  —  MUMBAI, India — You know the messages.  They pop up on your computer screen with ominous warnings like, “Your computer has been infected with a virus.