Overview
The final report cites "about 140,000" files confirmed stolen and "about 580,000" personal records possibly exposed (count blank). Identified data includes insurance payout (with bank accounts), policy and cancellation records of subsidiary Hope Small-Amount Short-Term Insurance, lease and tenant-screening documents of Ambition Agency, and rental-contract data.
Timeline
- Occurred
- Discovered
- Disclosed
Organization response
Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.
What you can do
Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.
Sources
- 当社サーバーへの不正アクセスによる情報漏えいの確認および調査状況について（第3報）株式会社アンビションDXホールディングス · 2026-11-09
- 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）株式会社アンビションDXホールディングス · 2026-11-09