jaea-jrr3-files-2026 · Disclosed 2026-10-01
日本原子力研究開発機構: unauthorized access and impact
2,419 research-support files were downloaded without authorization. 367 personal-data files for 175 people leaked, including identification numbers for six people.
Outcome: Confirmed breach
Entry path and evidence
Timeline
Disclosure date established by the reviewed notice. [s1]
Reported response
- Reported fact
External access was stopped and affected people notified; the site is independent of the business network.
[s1]本事象の概要 / 漏えいした個人情報 / 対応状況
Evidence relevant to prevention
Insufficient evidence
Undisclosed entry or patch timing prevents an avoidability assessment. Inspect privileges, retrieval logs, retention and deployed configuration using the linked rules.
Editorial assessment; not a determination of liability. [s1]
Unknowns and AI involvement
The reviewed disclosures do not establish attacker use of AI.
The initial entry route is undisclosed. Downloaded files, personal-data files and affected people are different units.
Sources
[s1] 日本原子力研究開発機構 · Primary source
日本原子力研究開発機構：事故に関する公表資料 ↗Reviewed 2026-10-09