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Osaka Prefecture: student data may have leaked after temporary loss of Nishinari HS trip manual

Possible data leak: A Nishinari HS lodging-training teacher manual was briefly lost at an airport toilet on Dec 11, 2025 and recovered as airline lost-and-found; after parent briefings a May 8, 2026 press release followed.

Last updated: 2026-11-09

Overview

Subsets (126 participants, 18 non-participants, 48 medical notes, 24 minpaku, 3 escorts) 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. 個人情報が記載された書類の一時的な紛失について大阪府 · 2026-11-09

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