Kobayashi Pharmaceutical Co. Ltd. has fallen victim to a ransomware attack orchestrated by the threat actor worldleaks, potentially compromising sensitive corporate data. The incident has impacted Japan.
Incident Details
- Victim: Kobayashi
- Country: JP
- Actor: worldleaks
- Source: https://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/5218015704
- Discovered: 2025-11-01 09:36:59.592458
- Published: 2025-11-01 09:08:13.000000
Information
- The company specializes in the manufacturing and sale of over-the-counter drugs, oral hygiene products, and healthcare items.
- The product lineup includes cool fever patches, pain relief patches, skin creams, oral care products, and other health-related goods.
- The company has a global presence and focuses on enhancing everyday health and comfort for its customers.

Disclaimer: This post is based on public claims made by the ransomware group "worldleaks". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.