En cours d’enquête

Kodansha: phishing-led mailbox takeover may have stolen up to 3,812 contacts

Possible data leak: On July 27, 2026 an employee entered credentials on a partner-spoofing phishing page. On July 30 attackers logged into the work mailbox, stole contacts and phished 553 of them impersonating the employee; disclosed Aug 3.

Dernière mise à jour: 2026-11-09

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Présentation

“Up to 3,812” wording → count blank (553 of them received secondary phishing). Fields: email and some names.

Chronologie

InconnuSurvenue
2026-07-27Découverte
2026-08-03Divulgation

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

フィッシングによる社用メール不正ログインと連絡先情報の流出に関するお詫びとお知らせ株式会社講談社 · 2026-11-09

Kodansha: phishing-led mailbox takeover may have stolen up to 3,812 contacts

Présentation

Chronologie

Réponse de l’organisation

Que faire ?

Sources

Informations associées

Aucune information publiée

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