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JAENES
ALeak confirmedOctober 9, 2026 announced

大阪市教育委員会（就学援助審査通知）Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
Unconfirmed
Announced on
October 9, 2026
Severity
AFinancial and HR records — information that easily translates into monetary damage.
Scale
1 people
Main impact
A student school assistance review notification was sent in error, and the personal information of 1 person was disclosed externally.
Information involved
Not specified in the disclosure
Cause / key point
The cause is under investigation.
Industry
Education
Listing / capital
Government / public body

An incident involving 市教育委員会.

Sources
Last updated
October 20, 2026
How severity is assessed →

Is this incident worth paying attention to?

Written & reviewed

笹尾 祐太朗の写真

Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.

CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.

Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:

Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction

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Attack method classification: Misdirected sending & disclosure (human error)(Leaks caused by wrong recipients or exposure settings)

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