概述
The notice gives "about 5.7 million" (Tabelog ~4.19M, Kakaku.com ~1.37M, Sumaity ~140k, Kyujinbox 142, icotto 4). Kakaku.com also includes birth date/gender for about 650,000 and icotto includes 2 user IDs. Count left blank as approximate. Email bodies were not involved. 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.
时间线
- 发生
- 发现
- 披露
组织应对措施
Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.
用户应对建议
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.
信息来源
- 業務委託先への不正アクセスに伴う当社サービスをご利用いただいているお客さまのメールアドレス漏えいについて株式会社カカクコム · 2026-11-09