Investigating

Kishiwada City: Arcadia intrusion may have exposed multiple emergency-notification registrant datasets

Disclosed Oct 15, 2026. Multiple services (citizen/staff/childcare/hospital/119 Raiden) may have exposed registrant data. Subsets not summed; about-figures not stored as exact.

Last updated: 2026-11-09

Overview

Subsets/about figures → 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. 情報配信サービス運営事業者への不正アクセスによる個人情報漏洩の可能性について岸和田市 · 2026-11-09

Related information

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