SHINDO2

Makinohara City Sagara Junior High School

Makinohara City

PhishingSize not disclosed

NO LEAK FOUNDClosed (final report)

Open in the live monitor ▶
Disclosed
Jun 1, 2026
Leak
No leak
Type
Phishing
Status
Closed (final report)
Security spend
Not checked yet
Compensation
Not announced

Who is affected

  • School staff member

Cause

While a staff member was reading about leave rules on a school PC, a fake Microsoft security warning appeared. The staff member called the number shown and, following instructions, allowed remote control; the scammer found the online-banking credentials and transferred money from the account

Timeline

  1. Announced by the city

Response

  • Forensic investigation

The city and board of education said they would determine the cause and take steps to prevent a recurrence

What you should do

  1. Expect targeted phishing posing as HR or interview contacts
  2. 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