Ymir Link: personal data of client companies exfiltrated from Cuenote FC email platform

Resumen

A library vulnerability was exploited to obtain support-staff credentials, plant malicious programs that dumped databases, and log into other systems. The October 26 second report added 45 more affected systems (44 Cuenote FC, 1 Cuenote BASE). No overall total was found in the notices (count blank). Client-company impacts are recorded separately and must not be summed.

Cronología

1. DesconocidoOcurrencia
2. 2026-10-16Descubrimiento
3. 2026-10-19Divulgación
4. 2026-10-16

   Intrusion found; servers isolated.

5. 2026-10-19

   First report; police and PPC notified.

6. 2026-10-26

   Second report added affected systems.

Respuesta de la organización

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

Fuentes

1. 当社システムへの不正なアクセスに関するご報告（第一報 2026年10月19日 19:05更新版）ユミルリンク株式会社 · 2026-11-09
2. 当社システムへの不正なアクセスに関するご報告（第二報）ユミルリンク株式会社 · 2026-11-09
3. 当社システムへの不正なアクセスに関するご報告（第一報）ユミルリンク株式会社 · 2026-11-09

Información relacionada

animate-cuenote-email-breach-2026