Confirmed

Monogatari: 10,788,963 Yakiniku King app member records leaked

Monogatari detected unauthorised access to the Yakiniku King app member system on October 2 and confirmed a member-data leak on October 3.

Last updated: 2026-11-09

Overview

10,788,963 of 10,808,784 registrations leaked (member number, registered name, email, phone). No passwords, birth dates or usage history; payment data is not held.

Timeline

  1. Occurred
  2. Discovered
  3. 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

  1. 『焼肉きんぐ』公式アプリ 会員管理システムへの第三者からの不正アクセスによる個人情報漏えいに関するお詫び株式会社物語コーポレーション · 2026-11-09

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