A recent cyberattack on Hoya Corporation was conducted by the 'Hunters International' ransomware operation, which demanded a $10 million ransom for a file decryptor and not to release files stolen during the attack.
Hoya Corporation, one of the largest global manufacturers of optical products, says a "system failure" caused servers at some of its production plants and business divisions to go offline on Saturday.
Japanese optical products manufacturer HOYA Corporation was hit by a cyber attack at the end of February which led to a partial shutdown of its production lines from Thailand for three days.