Japanese Chemical Manufacturer Discloses System Failure due to Cyberattack
INCIDENT
Kurogane Kasei, a chemical manufacturer and subsidiary of KH Neochem, revealed a system failure believed to be caused by a cyberattack. According to the company, it detected a possible breach of some of its servers on October 16, 2025. System failures have also occurred and are believed to be the result of this breach. The company is currently investigating the scope and cause of the impact, including the possibility of an information leak. The company denies that the outage has had any impact on production activities. RansomHouse claimed the cyberattack on October 23, 2025, and threatened to release sensitive data unless the company engaged in negotiations. The company has not confirmed who is behind the cyberattack.