Overview
1,974 people: addressee/insured info, name, birth date and address. Confirmed exfiltration not established.
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
- 株式会社YCC情報システムに対する不正アクセス事案について三川町 · 2026-11-09