OSLO (Reuters) – Norsk Hydro, one of the world’s largest aluminum producers, has made some progress in restoring operations but is not yet back to normal after a ransomware cyber attack, the company said on Wednesday.
A sign warning employees not to connect devices to the network in the wake of a cyber attack is seen at the headquarters of aluminum producer Norsk Hydro in Oslo, Norway March 19, 2019. REUTERS/Gwladys Fouche
After the attack began late on Monday, the company had to shut several plants that transform aluminum ingots into components for car makers, builders and other industries, while its smelters in Norway were largely operating on a manual basis.
“Hydro still does not have the full overview of the timeline towards normal operations, and it is still (too) early to estimate the exact operational and financial impact,” the company said in a statement.
But Hydro said its technical team, working with external support, had detected the root cause of the problems and was working to restart the company’s IT systems.
“Progress has been made, with the expectation to restart certain systems during Wednesday, which would allow for continued deliveries to customers,” Hydro said of its Extruded Solutions unit as well as of Rolled Products.
The two divisions are key to the company’s downstream operation, serving a range of industries with bespoke aluminum components, as well as metal sheets used for packaging, transport and construction.
The Norwegian National Security Authority, the state agency in charge of cybersecurity, said the attack used a virus known as LockerGoga, a relatively new strain of so-called ransomware, which encrypts computer files and demands payment to unlock them.
The attack began in the United States on Monday evening and escalated into Tuesday, hitting IT systems across most of the company’s activities and forcing staff to issue updates via social media.
The company also posted notes at the entrance to its headquarters, instructing employees not to log their computers onto its networks.
Norsk Hydro’s shares rebounded on Wednesday, trading 0.8 percent higher at 0901 GMT, compared with a 0.2 percent fall in the Oslo benchmark index. The price of aluminum fell 0.2 percent on the London Metal Exchange.
Companies and governments have become increasingly concerned about the damage hackers can cause to industrial systems and critical national infrastructure following a number of high-profile cyber attacks.
In 2017, hackers later accused by the United States of working for the North Korean government unleashed billions of dollars of damage with the Wannacry ransomware virus, which crippled hospitals, banks and other companies worldwide.
Pyongyang has denied the allegations.
Other cyber attacks have downed electricity grids and transport systems in recent years, and an attack on Italian oil services firm Saipem late last year destroyed more than 300 of the company’s computers.
Reporting by Terje Solsvik and Gwladys Fouche; Editing by Elaine Hardcastle and Dale Hudson