Overview
Count stores the 100 rows shown on the view screen (of 207 registrations). Name, school, grade and phone. Fields were shuffled so not linkable as a full dossier.
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
- 県立高校における個人情報の漏洩について（高校教育課）群馬県 · 2026-11-09