SHINDO2

Nanto City

Personal data1,380records

EXPOSEDFull nameMisconfiguration · Contained

Open in the live monitor ▶
Disclosed
Jul 13, 2026
Detected
Jul 9, 2026
Detection to disclosure
4 days
Leak
Exposed, access unknown
Type
Misconfiguration
Status
Contained
Security spend
Not checked yet
Compensation
Not announced

What leaked

IdentityNames of farming individuals and businesses

How many

  • Farming individuals and businesses 1,380 records

Who is affected

  • Individuals and businesses farming in 28 districts of the city

Cause

Names were masked in the PDF but the underlying data was not removed, so a certain operation revealed them

Timeline

  1. PDF published on the city website
  2. Found after the prefecture pointed it out
  3. First disclosure

Response

  • Config review
  • Staff training
  • Change process

Correcting the data, stronger pre-publication checks, staff training

What you should do

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

Lessons for companies

  1. Two-person review and pre-release tests for sharing and cache changes; monitor cloud config (CSPM)
  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