U.S. officials say they have found the source of the recent cyberattacks. The hackers are apparently part of a group of less than 100 computer security specialists from Iranian universities and network security firms. The cyberattacks hit the Saudi Arabian state oil company Aramco and Qatari natural gas producer RasGas using a virus, known as Shamoon, which can spread through networked computers and ultimately wipes out files by overwriting them. Iran blames Israel and the United States for the attacks, as Iran has itself been victim of cyberattacks on its offshore oil platforms.
Source: https://thehackernews.com/2012/10/us-authorities-iranian-hackers-are.html