Confirmed

SMBC Consumer Finance: customer data sent out of guarantee-business system (up to 320,118 people)

SMBC Consumer Finance confirmed that a system used for loan-guarantee work with partner banks was accessed without authorisation and that data sent externally contained customer personal data.

Last updated: 2026-11-09

Overview

Detected and blocked on November 2. "Up to 320,118 people" (count blank): names, birth dates, addresses, phones, emails, driver's licence numbers, employer and income, and contract data. ID images were not included.

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. 当社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SMBCコンシューマーファイナンス株式会社 · 2026-11-09

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