已確認

Kakaku.com: about 5.7 million email addresses from Tabelog, Kakaku.com and other services leaked via Arara breach

Kakaku.com was told that unauthorised access to Arara, its email-delivery contractor, leaked email addresses of users of Tabelog, Kakaku.com, Suumo-related Sumaity, Kyujinbox and icotto, and announced it on November 5.

最後更新: 2026-11-09

此內容以 English 顯示。

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.

時間軸

不明發生
不明發現
2026-11-05公布

組織應對措施

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

使用者應對建議

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.

資訊來源

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