Investigating

Loginet Japan: Fuso Dentsu cloud intrusion may have leaked Yukinomizu customer/partner data

Possible data leak: Vendor Fuso Dentsu’s cloud share used for Yukinomizu sales-admin work was intruded on July 15, 2026; personal-data exposure risk reported to Loginet on July 31; disclosed Aug 6. Scope is 2023 May/Oct work data, not the live sales system.

Last updated: 2026-11-09

Overview

No published headcount (blank). Related to the Fuso Dentsu root incident.

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. 弊社委託先が利用するクラウドストレージへの不正アクセスによる情報漏えいの可能性に関するお詫びとお知らせ株式会社ロジネットジャパン · 2026-11-09

Related information

fuso-dentsu-cloud-share-folder-possible-leak-2026

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