Investigating

Ikoma City: Arcadia intrusion may have exposed emergency/disaster-mail registrant data

Possible data leak: Disclosed Oct 13, 2026. About 3,000 resident emails, about 1,000 staff-assembly records and about 10 FAX records may all have leaked. Subsets not summed.

Last updated: 2026-11-09

Overview

“About” subsets not summed → blank.

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. 緊急・災害情報メール等への不正アクセスによる個人情報漏えいの可能性について生駒市 · 2026-11-09

Related information

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