Investigating

Nippon Steel Kowa Real Estate: cloud intrusion may have exposed condo-sales customer data

Possible data leak: Unauthorized access to part of a used cloud service confirmed Aug 25, 2026 and disclosed Aug 26. Condo-sales customer data were stored there; no confirmed leakage/misuse yet; access stopped pending investigation.

Last updated: 2026-11-09

Overview

No published headcount (blank).

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

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

What you can do

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

  1. 当社が利用するクラウドサービスへの不正アクセスに関するお知らせ日鉄興和不動産株式会社 · 2026-11-09

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