SHINDO2

One Stop Job Site Kumamoto

Kumamoto Prefecture

kumamoto.onestop-job.jp

Personal data0records

NO LEAK FOUNDUnauthorized access · Closed (final report)

Open in the live monitor ▶
Disclosed
Sep 9, 2026
Leak
No leak
Type
Unauthorized access
Status
Closed (final report)
Security spend
Not checked yet
Compensation
Not announced

How many

  • Personal data leaked (none confirmed) 0 records

Cause

External unauthorized access altered the site so that fake warning ads (fake alerts) appeared on the registration screen

Timeline

  1. Fake alerts shown (iPhone only)
  2. Exposure ended
  3. First disclosure

Response

  • Patched
  • More monitoring

Identified the cause, restored the altered parts and strengthened security and monitoring

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