Reports surfaced Monday that Iran’s main oil terminal and the oil ministry suffered a cyber attack by a virus similar to the Stuxnet worm, Reuters reports.
The virus was detected inside the control systems of Kharg Island, which handles Iran’s crude oil exports, the report said.
The state oil company company reported that the terminal remained operational.
The virus was found in Iran’s oil ministry and national oil company’s Internet and communications systems on Sunday as well.
The Mehr news agency reported that Iranian organizations not yet affected by the virus disconnected oil computer controlling systems from the Internet as a precautionary measure.
The oil ministry’s Shana media network said some data had been affected but there was no large damage done to the nation’s oil organizations.
The Sunday attack resulted in no disruption of oil production or exports, according to Mehr.
The Stuxnet worm, discovered in 2010, has been pointed to as the culprit of an attack that affected Iranian nuclear facilities.
Reuters reports that Stuxnet is thought to be the only virus specifically designed to infect industrial systems.
The U.S. Institute for Science and International Security said the attack infected 1,000 out of the 9,000 centrifuges used at Iran’s Natanz enrichment plant.
Iranian officials indicated they suspect the U.S. or Israel created Stuxnet in order to harm the nation’s atomic program.