As with Stuxnet, Israel and the U.S. are the primary suspects, but so far there is no incontrovertible evidence indicating even a connection with Stuxnet, let alone a common ownership or set of targets.
Welcome to the new world of cyberwar.
Read more of Kevin Fogarty's CoreIT blog and follow the latest IT news at ITworld. Follow Kevin on Twitter at @KevinFogarty. For the latest IT news, analysis and how-tos, follow ITworld on Twitter and Facebook.