Confirmed

Media4u: SMS console account list of 95,412 rows leaked; 22,928 may contain personal data

Unauthorized access to the SMS system confirmed June 24, 2026. An account-management list file from the admin console was exfiltrated. Parent Fabrica HD disclosed July 14; Media4u posted details the same day. 280 illicit SMS sends also confirmed.

Last updated: 2026-11-09

Overview

Count field uses the 22,928 rows assessed as possibly containing personal data (account-management rows; may not equal distinct people). Total list size 95,412 and 280 illicit SMS are described only. Passwords, API keys, payments, and end-user phone numbers/SMS bodies out of scope.

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. サイバー攻撃による不正アクセス及び情報漏洩等に関するお知らせとお詫び株式会社ファブリカホールディングス · 2026-11-09
  2. SMS配信システムへの不正アクセスに関するお知らせとお詫び株式会社メディア4u · 2026-11-09

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