Investigating

C-Connect Ink Revolution: payment-app tampering may have leaked 24,166 customer/card records

Possible data leak: Card brands raised concerns Dec 9, 2025; card payments stopped Dec 10 and an investigation began. A vulnerability-driven intrusion had tampered with the payment app, possibly exposing some customers from 2025-04-08 to 2025-12-10. The firm delayed public notice until after investigation results and first published in July 2026 (page id 2026-07-15). No earlier 2025 public disclosure found.

Last updated: 2026-11-09

Overview

24,166 personal-data records and 24,166 card-data records (same population, separate field sets). Count field 24,166.

Timeline

  1. Occurred
  2. Discovered
  3. 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

  1. 弊社が運営する「インク革命」への不正アクセスによる個人情報漏えい懸念に関するお詫びとお知らせ株式会社シー・コネクト · 2026-11-09

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