Tiger Chiyoda: ransomware attack
Server and PC encryption was discovered on September 8. The intranet and suspected devices were suspended while experts investigated and restored systems. Email communications were delayed, but no information leakage was confirmed at disclosure. No affected data fields or count were published.
Disclosed
2025-09-09
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Detected 2025-09-08
- Disclosed 2025-09-09
- 1 days
Attack or cause
- Method
- [Ransomware]
- Impact
- [Service outage]
- Entry point
- Unknown
Data exposed or at risk
–
Organizations involved
[Breached][Moderate]Okayama, TakahashiManufacturing
Tiger Chiyoda Inc.
Sources
- [1][Official]ランサムウェア被害の発生についてTiger Chiyoda Inc. · 2025-09-09