Investigating

Kameyama City: vendor intrusion may have exposed staff-assembly mail registrant data

Disclosed Oct 15, 2026. Staff-only assembly-mail intrusion may have exposed personal data. Citizen data and disaster app out of scope. 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. 職員参集メールサービスへの不正アクセスによる個人情報漏えいの可能性について亀山市 · 2026-11-09

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