Investigating

Miyazaki City: Arcadia intrusion may have exposed disaster-mail registrant data

First notice Oct 13, 2026. Vendor Arcadia announced possible personal-data leak after third-party intrusion. Second notice Oct 14 stopped new sign-ups and warned about suspicious mail. No headcount.

Last updated: 2026-11-09

Overview

No published headcount → 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. 防災情報配信システムへの不正アクセスに伴う対応について宮崎市 · 2026-11-09

Related information

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