Investigating

Fukuoka City: parent/child names may have leaked via misdelivered multi-child benefit notices

Possible data leak: Multi-child benefit notices for unlicensed-care households were mailed from a wrong address list; noticed May 27, 2026 and disclosed May 28.

Last updated: 2026-11-09

Overview

“Up to 409” wording → count blank. Fields are parent and child names.

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. 個人情報の流出について福岡市 · 2026-11-09

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