Overview
70,921 records in total; over 90% of about 70,000 are email-only, with some names and school names. 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
- 外部メール配信サービスへの不正アクセスに伴うお客さま情報の漏えいの可能性について株式会社朝日新聞社 · 2026-11-09