Ambition DX Holdings: ransomware attack
Anomalies were detected and disclosed August 6. The October 20 final report assessed entry through network equipment as likely, confirmed about 140,000 files taken and identified about 580,000 potentially exposed personal records, including insurance and rental-contract information. The latter is not a confirmed number of leaked people. Compromised equipment was isolated and a new environment established; no remaining threats or secondary misuse was found.
Disclosed
2026-08-06
Organizations involved
1
Leaked or at risk
580K
580,000
Downtime
Unknown
Timeline
- Detected, Disclosed 2026-08-06
- 1 days
Attack or cause
- Method
- [Ransomware][Intrusion]
- Impact
- [Data leak]
- Entry point
- Unknown
Data exposed or at risk
Organizations involved
[Breached][Critical]Tokyo, ShibuyaReal estate and rental
Ambition DX Holdings Co., Ltd.
Sources
- [1][Official]当社サーバーへの不正アクセスによる情報漏えいに関する調査結果および今後の対応について(最終報)Ambition DX Holdings Co., Ltd. · 2026-10-20