Overview
The November 4 second report identified 96,477 addresses sent October 8-29; no names, accounts or PINs. This stems from the Arara email-platform intrusion (recorded separately); the figure is a subset of the vendor 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
- 当行委託先提供の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）株式会社琉球銀行 · 2026-11-09