Confirmé

IEEJ: phishing of Microsoft 365 accounts led to external leakage of mail and files

After a Jul 29, 2026 tip, investigation found phishing of six staff M365 accounts with traces of 5,417 mail views and 3,272 file views (2,798 downloads). Disclosed Sep 11. No person-level headcount given.

Dernière mise à jour: 2026-11-09

Ce contenu est affiché en English.

Présentation

View/download figures are artifact counts, not people → blank.

Chronologie

InconnuSurvenue
2026-07-29Découverte
2026-09-11Divulgation

Réponse de l’organisation

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

Que faire ?

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

不正アクセスによる情報漏えいに関するお詫びとお知らせ一般財団法人日本エネルギー経済研究所 · 2026-11-09

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