Overview
The final report fixed the scope: buyer/member names, addresses, phones, fax, emails, employers, member IDs with encrypted passwords, partial card numbers (first 6 and last 4 digits), cardholder names and expiry dates, and merchant admin logins. "About 23,356,000" people (about 2,096,900 with partial card data; count blank) across 7,858 shops.
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
- 不正アクセスによる個人情報漏えいに関するお知らせ（第1報）株式会社Eストアー · 2026-11-09
- 不正アクセスによる個人情報漏えいに関するお知らせ（第2報）株式会社Eストアー · 2026-11-09
- 不正アクセスによる個人情報漏えいに関するお知らせ（最終報）株式会社Eストアー · 2026-11-09