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JAENES
BPossible leakSeptember 7, 2026 announced

東京科学大学（情報基盤）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
September 7, 2026
Severity
BIncidents centered on names and contact details.
Scale
Unknown
Main impact
There was unauthorized access to the information infrastructure, and names, addresses, email addresses, etc., of students and faculty/staff, including those from pre-merger universities, are suspected to have been leaked. The number of affected records is not stated.
Information involved
Email addressHome addressFull name
Cause / key point
The cause is under investigation.
Industry
Education
Listing / capital
Government / public body

National university corporation

Sources
Last updated
October 20, 2026
Email addressHome addressFull nameHow 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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)

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