Saudi Arabia's oil company, Saudi Aramco, says its main internal network is back up after a virus affected 30,000 work stations in mid-August, but the source of the attack remains unclear.
Saudi Aramco said all of the affected workstations have all been cleaned and restored to service and normal business resumed on Saturday when employees returned to work following the Muslim Eid holidays. The primary enterprise systems of hydrocarbon exploration and production were unaffected because they are kept on isolated network systems. Meanwhile, remote Internet access to online resources has been restricted, the statement said.
Source: CNet. Read full article. (link)