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Confirmed

Kotoura Town: contractor mis-stored personal data on 828 residents into another municipality’s area

On Sep 7, 2026 a resident-system contractor mis-stored a Kotoura data file into another municipality’s private area; one staffer viewed it the same day and it was deleted. 828 people across several municipal datasets. No copy/print/external exfiltration found. Press notice Sep 25.

Last updated: 2026-11-09

Overview

828 people.

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. 住民情報データの格納誤りによる個人情報漏洩について琴浦町 · 2026-11-09
  2. 【報道提供資料】住民情報データの格納誤りによる個人情報漏洩琴浦町 · 2026-11-09

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