Oriental Diamond Reports Ransomware Attack and Possible Data Exposure
Summary
Oriental Diamond says a ransomware attack on May 4, 2026 encrypted internal-server data and may have exposed personal information. It isolated servers, notified authorities, began restoration and investigation, suspended VPN use and strengthened authentication.
Key points
- Oriental Diamond reported that a ransomware attack occurred on May 4, 2026.
- The attack encrypted data on the company's internal servers.
- The company said personal information may have been exposed; the article does not confirm a leak.
- Oriental Diamond isolated its servers, notified police and the Personal Data Protection Commission, and began investigation and restoration work.
- The company said it would suspend VPN use and strengthen authentication procedures.
Article Details
- Victim Organization
- Oriental Diamond
- Victim Domain
- orientaldiamond.jp
- Incident Type
- Ransomware attack; data on internal servers was encrypted.
- Incident Date
- 2026-05-04
- Disclosure Date
- 2026-05-12
- Data Types Exposed
- Personal information (potential exposure; leakage was not confirmed)
- Affected Records
- Unknown
- Affected Data Size
- Unknown
- Operational Impact
- Data on internal servers was encrypted. Oriental Diamond isolated the servers and began restoration and investigation efforts.
- Ransom Or Extortion
- Unknown
- Claim Status
- confirmed