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GEX: ransomware incident may have allowed viewing of inquiry-customer personal data

Possible data leak: Ransomware access to a personal-data server confirmed in Feb 2026 with immediate isolation. Aug 19 notice: inquiry customers’ personal data were temporarily viewable; no confirmed exfiltration or misuse.

Last updated: 2026-11-09

Overview

77,619 full-field and 1,360 name-only subsets are not summed → count blank.

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. 【重要】ランサムウェア攻撃による個人情報漏えいの調査結果および再発防止策についてジェックス株式会社 · 2026-11-09

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