Investigating

Nagasaki City: Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster-mail emails

Disclosed Oct 13, 2026. Arcadia SpeeCAN RAIDEN intrusion may have exposed disaster-mail registered emails. Headcount/scope not yet fixed; investigation ongoing.

Last updated: 2026-11-09

Overview

Headcount not yet fixed → 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. 長崎市防災情報メールにおける不正アクセスに伴う個人情報の漏えいのおそれについて長崎市 · 2026-11-09

Related information

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