Saudi Aramco says computers normal after cyber attack

Saudi Arabian Oil Co., the world’s largest crude exporter, said most of its computer network is back to normal after it was attacked by a virus that forced the company to isolate many parts of its systems.

The state-owned oil company, known as Saudi Aramco, said it was able to clean out the virus that attacked the network from an external source on Aug. 15 and affected 30,000 personal computers. Output of crude oil and refined products wasn’t affected since the attack, the company said Sunday in an e-mailed statement.

“We want assure our customers and partners that our fundamental operations for oil and gas production and distribution are continuous with the same reliability,” Chief Executive Officer Khalid al-Falih said in the statement. “This is not the first attack on Saudi Aramco and it will not be the last, and we will fortify our network with all possible means to prevent similar future penetration.”

Al-Falih said the company is still investigating the incident and “all parties responsible for it.”

Saudi Aramco had to prevent external access to its network immediately after the attack as a precautionary measure.

“Our precautionary procedures, which have been in place to counter such threats, and our multiple protective systems, have helped to mitigate these deplorable cyber threats from spiraling,” al-Falih said in the statement.