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Confirmed

Nagoya City: mis-attached Excel on an air-survey notice exposed contact data for 572 business sites for about an hour

On Sep 28, 2026 at 10:00 an air-emissions survey notice was posted with an Excel sheet containing site contacts’ name/phone/email; replaced ~11:00. Viewable about one hour. 572 businesses. Disclosed Sep 29.

Last updated: 2026-11-09

Overview

572 businesses.

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. 環境局大気環境対策課における個人情報の漏えいについて名古屋市 · 2026-11-09

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