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Investigating

Five Foxes: member, inquiry and employee data may have leaked after ransomware incident

Possible ransomware infection found July 8, 2026 with immediate server shutdown; first notice July 14. September 8 follow-up disclosed possible personal-data exfiltration and began individual notices.

Last updated: 2026-11-09

Overview

Second-notice subsets: 59,504 VIP/GOLD members; 8,403 CS inquiries; 2,450 Five Foxes staff; 2,828 Comme Ca staff — not summed (count blank). Cards and My Number 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. 不正アクセスによる個人情報流出の可能性に関するお知らせとお詫び株式会社ファイブフォックス · 2026-11-09
  2. ランサムウェア感染の可能性に関するお知らせとお詫び株式会社ファイブフォックス · 2026-11-09

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