SHINDO4

Kyushu Women's University

Personal data2,896records

POSSIBLE LEAKPostal address / Phone numberAccount takeover · Contained

Open in the live monitor ▶
Disclosed
Feb 21, 2025
Detected
Dec 4, 2024
Detection to disclosure
79 days
Leak
Leak possible
Type
Account takeover
Status
Contained
Security spend
Not checked yet
Compensation
Not announced

What leaked

IdentityFull name
ContactAddress, Phone number, Email address

How many

  • Personal data of students, graduates, former staff and others 2,896 records

Who is affected

  • Students and graduates
  • Former faculty and staff
  • Other related people

Cause

An account ID and password were stolen by unknown means and used for unauthorized access from outside. Shared files created by students and staff may have been viewed from outside

Timeline

  1. Detected
  2. Cut off external network connections
  3. Date of the Security NEXT report; whether there was an earlier announcement was not checked

Response

  • Blocked the entry point
  • Revoked credentials
  • Forensic investigation

Cut external network connections, deleted accounts and analyzed communication logs

What you should do

  1. Don't open links in emails from this company. The apology email itself may be fake
  2. Treat refund or apology calls and texts as scams. Call back only on the number from the official site
  3. Watch for unexpected mail or invoices; your address is hard to change
  4. You can be affected without ever using this service (parcel recipients etc.). Check any notice you receive
  5. Expect targeted phishing posing as HR or interview contacts
  6. Check the company's notice to see if you're affected

Lessons for companies

  1. Passkeys or MFA for every account; monitor leaked credentials and rotate API keys
  2. Report to the PPC: preliminary in 3–5 days, final in 30 (60 if malicious)
  3. Run red teaming and AI-assisted hardening, and publish how much you invest

Sources