Présentation
Second report: "about 1,000" (count blank) from mail sent October 8-29. No names, addresses, account numbers or PINs confirmed leaked. Per the company, this stems from unauthorised access to the Arara email-delivery platform (recorded separately); this figure is a subset of the vendor scope and must not be added to it.
Chronologie
- Survenue
- Découverte
- Divulgation
Réponse de l’organisation
Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.
Que faire ?
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
- 当行が利用するメール配信サービスへの不正アクセスによるお客さまメールアドレス流出について（第2報）株式会社栃木銀行 · 2026-11-09
- 当行が利用するメール配信サービスへの不正アクセスによるお客さまメールアドレス流出について株式会社栃木銀行 · 2026-11-09