Confirmé

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.

Dernière mise à jour: 2026-11-09

Ce contenu est affiché en English.

Présentation

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

Chronologie

2026-09-01Survenue
2026-09-02Découverte
2026-09-29Divulgation

Réponse de l’organisation

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

Que faire ?

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

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

Présentation

Chronologie

Réponse de l’organisation

Que faire ?

Sources

Informations associées

Aucune information publiée

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