日本原子力研究開発機構（研究支援サイト）Data breach / unauthorized access incident
- Occurred on
- Unconfirmed
- Announced on
- October 1, 2026
- Severity
- SCompromise of deep personal data or usable credentials.
- Scale
- 175 people
- Main impact
- Personal identification documents and health examination results for 175 people were leaked, and it is reported that personal numbers are included for 6 of them. The leak creates a risk of identifying individuals and of fraudulent use.
- Information involved
- Identity verification dataHealth & medical data
- Cause / key point
- The cause is under investigation.
- Industry
- Education
- Listing / capital
- Government / public body
National Research and Development Agency
- Last updated
- October 20, 2026
Is this incident worth paying attention to?
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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: Under investigation / not stated(Cause not disclosed)
Read the Under investigation / not stated guide and national trends →