A group of hackers have executed a ransomware attack on Hoya Corp., marking the second successful attack on the Japanese firm in two years.

”We can confirm that Hoya Vision Care U.S. has experienced a cyberattack. Based on our initial forensics, the disruption appears to have been limited to our United States systems,” a Hoya spokesperson said. "After identifying the threat, we quickly took action to contain it and contacted law enforcement. The company has engaged external experts to determine the nature and scope of this event. We will provide updates as more information becomes available.”

Hoya, named after the western Tokyo neighborhood where it was founded in 1941, is a glassmaker with about 37,000 employees worldwide and about $5 billion in annual revenue. Last year, the company received 65% of its sales from contact lenses and glasses, while the rest came from IT devices and services, including glass substrate used in the manufacturing of semiconductors and hard disk drives, according to a 2020 company report.