Investigating

Zama City: Arcadia SpeeCAN RAIDEN intrusion may have exposed Isama Mail and staff-assembly registrant data

Disclosed Oct 13, 2026. Arcadia SpeeCAN RAIDEN intrusion may have exposed about 11,000 Isama Mail registrants (emails) and about 900 staff safety/assembly records (name/unit/email). “About” figures → blank; subsets not summed.

Last updated: 2026-11-09

Overview

“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. 座間市緊急情報配信システム(いさまメール)の一時停止および個人情報漏洩の恐れ座間市 · 2026-11-09

Related information

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