Investigating

Kanagawa Pref.: Arcadia SpeeCAN RAIDEN intrusion may have exposed air-pollution mail/phone registrant data

Disclosed Oct 14, 2026. Arcadia SpeeCAN RAIDEN air-pollution mail/phone services may have exposed emails and phone numbers. Multiple services include a Mar-2026 end count of 6,321 photochemical-smog mail registrations, but latest totals are still being confirmed → blank.

Last updated: 2026-11-09

Overview

Latest headcount still under confirmation → 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. 大気汚染情報メール・テレホン配信サービスにおける個人情報の漏えいの可能性について(第1報)神奈川県 · 2026-11-09

Related information

arcadia-speecan-raiden-possible-leak-2026

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