Investigating

Kyoto Prefecture: KYOiku TV favorites flaw may have exposed member names on the open web

Possible data leak: On the contracted on-demand learning site “KYOiku TV”, names and registration dates of members using Favorites were viewable by anyone; some also appeared in search results. Feature/site stopped; disclosed Aug 4.

Last updated: 2026-11-09

Overview

“Up to 1,338” wording → count blank (86 in search results described only).

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. オンデマンド学習サイト「KYO育tv.」における個人情報の漏えいについて京都府 · 2026-11-09

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