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Mainichi Shimbun: newsletter email addresses may have leaked via Cuenote FC breach

Possible data leak: Mainichi Shimbun announced on October 26 that Ymir Link said some Cuenote FC data used for newsletters was likely taken externally, and stopped delivery that day.

最後更新: 2026-11-09

此內容以 English 顯示。

概述

Possible fields: emails of news/event recipients and similar. No card data. No count in this notice (count blank). This stems from the Ymir Link Cuenote FC intrusion (recorded separately); the figure is a subset of the vendor scope and must not be added to it.

時間軸

不明發生
不明發現
2026-10-26公布

組織應對措施

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

使用者應對建議

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.

資訊來源

外部メール配信サービス運営会社への不正アクセスに伴うメールアドレス等の漏えいの可能性について株式会社毎日新聞社 · 2026-11-09