Investigating

Yorii Town: vendor intrusion may have exposed data on 3,024 mail-delivery registrants

Disclosed Oct 13, 2026 (restart-notice page). 3,024 registrants at the time of intrusion confirmation; personal data may have leaked and delivery was emergency-stopped.

Last updated: 2026-11-09

Overview

3,024 people.

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. 不正アクセスによる寄居町メール配信サービス登録者の個人情報漏えいの可能性及び配信サービスの緊急停止について寄居町 · 2026-11-09

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