Renault and Nissan have been attacked by online hackers, affecting production at Nissan's Sunderland factory.
The attacks are reported to have been carried out by the same group which attacked the NHS this week. The BBC reports Renault is the first French company to be affected by the cyber attack, which steals and encrypts files and documents, before demanding a fee of $300 (around £230) to de-crypt them. In total, around 75,000 systems in 99 countries are believed to have been affected.
A Renault UK spokesman said: "Groupe Renault confirms it was impacted by the global cyber attack that began late on Friday May 12. It consists of a Ransomware virus. Proactive measures were taken immediately in order to stop the spread of the Virus and protect the group. A full diagnosis is in progress in order to put in place the appropriate solutions to resume operations."
"Like many organisations our plant was subject to a ransomware attack affecting some of our systems on Friday evening," said a spokesman. "We are working to resolve the issue."