SHINDO1

Seijo Gakuen

Unauthorized accessSize not disclosed

NO LEAK FOUNDClosed (final report)

Open in the live monitor ▶
Disclosed
Jun 19, 2026
Detected
Jun 17, 2026
Detection to disclosure
2 days
Leak
No leak
Type
Unauthorized access
Status
Closed (final report)
Security spend
Not checked yet
Compensation
Not announced

Not leaked

  • The content held no personal or confidential data, so none leaked

Who is affected

  • Virtual tour visitors

Cause

Poor management let a third party misuse the tour to redirect visitors to outside sites

Timeline

  1. Detected
  2. First disclosure

Response

  • Service stopped
  • Governance / committee

Deleted the content and closed the page; strengthening information management and security

What you should do

  1. Check the company's notice to see if you're affected

Lessons for companies

  1. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  2. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources