Overview
Only email addresses confirmed leaked; count still under review (count blank). Names and membership numbers not 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.
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
- メール配信サービス「アララメッセージ」への不正アクセスによるお客様のメールアドレス流出に関するお詫びとお知らせ（第一報）キンコーズ・ジャパン株式会社 · 2026-11-09