(Reuters) — Aurubis, Europe’s largest copper smelter, said it had been the target of an overnight cyber attack that has forced the company to shut down its IT systems and disconnect them from the internet.
“The IT systems are currently being investigated,” Aurubis said on Friday, adding that it was reviewing the extent of the impact.
Shares in Aurubis, which gave no further details, fell more than 4% on the news.
Germany’s cyber security agency BSI warned earlier this week that cyber risks were at their highest ever, with high levels of cybercrime and risks related to the war in Ukraine.
However, it said there appeared to be no overall attack campaign against German targets.
Earlier this year, a cyber attack against a satellite communications company knocked out the remote control of thousands of wind turbines in central Europe.
Additionally, in March a German subsidiary of Russia̵7;s Rosneft was the target of a cyber attack by what BSI called “hacktivists” on Anonymous Germany.