Investigating

Hokkaido Gas: 296 records may have leaked after LNG order-system intrusion at subsidiary

After external intrusion into subsidiary Hokkaido LNG’s order system, staff/partner data may have leaked; disclosed May 7, 2026.

Last updated: 2026-11-09

Overview

Count stores 296 (283 notified + 13 pending). Company, name, email and encrypted login password.

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. 「LNG受発注システム」への不正アクセスに関するお詫びとお知らせ北海道ガス株式会社・北海道LNG株式会社 · 2026-11-09

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