Overview
4 customers: name, address, birth date and account number; 617 customers: name only. Categories are not summed (count blank). Services other than digital securities were unaffected.
Timeline
- Occurred
- Discovered
- Disclosed
Securitize detected the issue and first reported.
Sony Bank announced.
Count wording updated.
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
- デジタル証券に関する外部委託先（Securitize Japan）への不正アクセスによるお客さま情報の漏洩についてソニー銀行株式会社 · 2026-11-09