Overview
Bank-specific fields and headcount still under review (count blank). Guarantor-listed fields: Names, gender, birth dates, addresses, phones, emails, driver-licence numbers, employer and contract data; ID-document images not included. This stems from the intrusion into SMBC Consumer Finance's guarantee system (recorded separately); the figure is a subset of that scope and must not be added to it.
Timeline
- Occurred
- Discovered
- 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
- ＳＭＢＣコンシューマーファイナンス株式会社の保証システムへの不正アクセスによるお客さま情報の漏えいについて株式会社横浜銀行 · 2026-11-09