Investigating

HIS: passport data may have leaked after intrusion into Thailand subsidiary file server

HIS announced on its website on October 7, 2026, after completing its review, that unauthorised access to the file server of Thailand subsidiary H.I.S. TOURS may have exfiltrated data.

Last updated: 2026-11-09

Overview

"Up to 627" passport records (romanised names, signature-panel names, gender, birth dates, passport numbers, expiry) and allergy data (count blank). No phones, addresses, emails or cards. Detected 11 Dec 2025; PPC notified 29 Dec 2025; first general public notice is this 7 Oct 2026 document.

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. 子会社ファイルサーバへの不正アクセスによる個人情報流出の可能性に関するお詫びとお知らせ株式会社エイチ・アイ・エス · 2026-11-09

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