Confirmed

Kumamoto City: mis-attached nursery-fee file leaked personal data of 344 enrolled children

On July 9, 2026 Nishi Ward staff emailed nursery enrollment/fee files and mis-attached other nurseries’ data to two nurseries; noticed July 10 with deletion confirmed; disclosed July 16.

Last updated: 2026-11-09

Overview

344 children across 6 nurseries (name, DOB, facility, certification, fees, etc.). The 1-person mix-up to nursery A is included in the 344 sent to nursery B.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

What you can do

Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.

Sources

  1. 西区役所における在園児データの誤送信による個人情報の漏えいについて熊本市 · 2026-11-09

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