Canadian steel manufacturer Stelco Holdings Inc. said it has suffered a security incident, which the company described as “a criminal attack on its information systems.”

Following the cyber-attack the company implemented countermeasures to limit the scope of the attack. As a preventive measure Stelco temporarily suspended certain operations, including steel production but have since resumed operations.

The company did not reveal the nature of the cyber-attack, or what damage it might have caused. In a press release Stelco said that in conjunction with industry-leading cybersecurity specialists and other advisors, continues to investigate the incident and extent of the impact on its systems.

“Stelco is implementing its back-up and recovery plans to fully re-establish its systems as quickly as possible and some business functions may be adversely affected during this recovery process,” the company added.

Last week, the Indian pharmaceutical giant Dr. Reddy’s Laboratories Ltd has been forced to shut down operations at several global facilities, including those in the UK, the US, Brazil, India, and Russia due to what appears to be a ransomware attack. The serialization process, dispatches, quality control result recordings, and approval processes through electronic systems were reportedly put on hold.