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[Resolved][Severity: Critical][Ransomware]

Huis Ten Bosch: ransomware attack

Encryption was discovered on August 29. December's investigation identified entry through remote-access equipment and potential exposure concerning about 1,499,300 customers, 37,300 staff/family members and 9,400 business contacts. Some records contained My Number and health data; no card data was stored. Affected services recovered by October 1.

Disclosed

2025-08-29

Organizations involved

1

Leaked or at risk

1.5M

1,499,300

Downtime

Unknown

Timeline

  1. Detected, Disclosed 2025-08-29
  2. 1 days

Attack or cause

Method
[Ransomware]
Impact
[Data leak][Service outage]
Entry point
Remote access

Data exposed or at risk

[Name][Date of birth][Gender][Postal address][Phone number][E-mail address][My Number][Health data]

Organizations involved

Open in organization search

Sources

  1. [1][Official]不正アクセス事案に関する調査結果のご報告とお詫び（過去公表文を含む）Huis Ten Bosch Co., Ltd. · 2025-12-12