已确认

Mitsui Fudosan &BIZ: 133,323 email addresses leaked via Arara system used by contractor

Registered email addresses of &BIZ, a service for office-tenant employees, leaked in the intrusion (October 27-31) of the Arara system used by its newsletter contractor.

最后更新: 2026-11-09

此内容以 English 显示。

概述

133,323 email addresses; names are not handled in that system. This stems from the Arara email-platform intrusion (recorded separately); the figure is a subset of the vendor scope and must not be added to it.

时间线

2026-10-27发生
未知发现
2026-11-05披露

组织应对措施

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

用户应对建议

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.

信息来源

業務委託先の利用サービスへの不正アクセスによる「&BIZ」登録のメールアドレス情報の漏えいに関するお詫びとお知らせ三井不動産株式会社 · 2026-11-09