Cyber Attack Hits Operations at Aluminum Maker Norsk Hydro (2)

Norsk Hydro ASA, one of the world’s biggest aluminum producers, suffered production outages after a cyber attack affected operations across Europe and the U.S.

The company said it was still working to contain the effects of the ransomware, a kind of malicious software that typically blocks computer access unless a ransom is paid, and called the situation “quite severe.” Hydro said it has cyber insurance and plans to restore systems using back-up data.

It couldn’t detail how much output had been impacted, but said it had isolated affected plants. Some plants where metal is fashioned into finished products for use ...