Overview
274 people (name, phone, email, fax, staff/student ID, org/affiliation, etc.). Address, DOB, cards and bank accounts out of scope.
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
- 山中湖セミナーハウス予約サイトへの不正アクセスによる個人情報漏えいの可能性について東海大学 · 2026-11-09