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Mitsui Ocean Cruises: lost transfer media may have exposed passenger and crew personal data

External media used to migrate data from Nippon Maru went missing in Jul 2026; passenger/crew personal data may have been on it; disclosed Sep 10. Counts still under review.

Last updated: 2026-11-09

Overview

Count not yet fixed → 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. 営業情報を保存した外部記憶媒体の紛失について商船三井クルーズ株式会社 · 2026-11-09

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