已確認

TOPPAN: mis-sent Sompo Japan premium-deduction contractor list covering 177,426 policyholders to another insurer

On Sep 1, 2026 a manual send mixed a Sompo Japan policyholder ZIP (kana name, deduction policy no., business ID) into another insurer’s package. Recipient deleted it; no further exfiltration found. 177,426 policyholders (may fall after dedupe). Disclosed Sep 29.

最後更新: 2026-11-09

此內容以 English 顯示。

概述

177,426 people (published figure; may fall after dedupe).

時間軸

2026-09-01發生
2026-09-02發現
2026-09-29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

当社受託「保険料控除証明書発行サービス」運用業務におけるデータ誤送付についてTOPPAN株式会社 · 2026-11-09

TOPPAN: mis-sent Sompo Japan premium-deduction contractor list covering 177,426 policyholders to another insurer

概述

時間軸

組織應對措施

使用者應對建議

資訊來源

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