Overview
Up to 9,086 account creators (upper bound, count blank), including 54 whose bank account numbers may have leaked. Names, addresses, phones, emails, birth dates, gender, account numbers and investment units. Card data was not entrusted.
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
- デジタル社債の管理に関する外部委託先企業への不正アクセスによるお客さまの情報漏えいについて株式会社丸井グループ · 2026-11-09