Overview
Possible fields: newsletter opt-in names, emails and internal IDs. No passwords, cards or purchase history in that system. Count under review (count blank). No intrusion into DNP group systems. This stems from the Ymir Link Cuenote FC intrusion (recorded separately); the figure is a subset of the vendor scope and must not be added to it.
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
- 外部委託先への不正アクセスによる「honto」のお客様情報漏えいの可能性について大日本印刷株式会社 · 2026-11-09