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[Contained][Severity: Critical][Ransomware][Intrusion]

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

  1. Detected, Disclosed 2026-08-06
  2. 1 days

Organizations involved

Open in organization search

Sources

  1. [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