Investigating

Mikuri-gaike Onsen: Temairazu intrusion may have exposed guest reservation data

Temairazu reservation-system intrusion may have exposed guest personal data; disclosed Oct 5, 2026. Suspicious messages seen for some reservations made by Sep 21 with stay on/after Sep 21. No card data held. Related to the Temairazu root incident.

Last updated: 2026-11-09

Overview

No published headcount → 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】お客様の個人情報漏洩の可能性に関するお詫びと注意喚起のお知らせみくりが池温泉 · 2026-11-09

Related information

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