Nikkei reports about 1.83 million development-cloud entries leaked

Présentation

About 150,000 entries contained one or more identifying fields; about 120,000 email entries are a subset. Roughly 1.68 million contained only non-identifying fields. These approximate record counts are not people totals and are not added. No card information was included. The credential-theft route is unknown; subsequent PHP reviews or form changes do not establish the entry cause.

Chronologie

1. 2026-10-07Survenue
2. InconnuDécouverte
3. 2026-10-16Divulgation
4. 2026-10-07

   Unauthorized access to development cloud.

5. 2026-10-16

   Initial public disclosure.

6. 2026-10-28

   Nikkei HR updated individualized-notice progress.

Réponse de l’organisation

Nikkei invalidated cloud credentials, reported to Japan’s data-protection authority on October 11 and began individual confirmed-victim notices on October 21.

Sources

1. Personal Information Leak Due to Unauthorized AccessNikkei Inc. · 2026-11-09
2. 日経HR 第2報: 個別通知状況株式会社日経HR · 2026-11-09