Nissan Chemical Detects Unauthorized Access to Its Systems

Nissan Chemical Co., Ltd. announced on July 16 that suspicious activity detected on July 1 led to the discovery of a possible unauthorized third‑party intrusion into its internal systems. The company said it has taken immediate remedial actions, strengthened monitoring, and is working with external experts to determine the cause and scope. No impact on customers or business partners has been confirmed so far.

A recently released whitepaper details a ransomware attack on Asahi Group Holdings that occurred in September 2025. The attack, claimed by the Qilin group, involved the theft of about 9,000 files totaling 27 GB of data and highlighted the growing threat of ransomware to Japanese enterprises. The document outlines how such attacks operate and offers lessons for improving defenses against similar threats.