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k9natural-2026 · Disclosed 2026-07-14

K9ナチュラルジャパン: unauthorized access and impact

The online-service management server was accessed without authorization; the entry cause is undisclosed. The follow-up confirmed 78,763 leaked records, revised upward from about 60,000; card data was not leaked.

Cause unresolved / undisclosed

Outcome: Confirmed breach

Entry path and evidence

  • Reported fact

    The online-service management server was accessed without authorization; the entry cause is undisclosed.

    [s1]9月4日報告 概要 / 二次被害
  • Reported fact

    The follow-up confirmed 78,763 leaked records, revised upward from about 60,000; card data was not leaked.

    [s1]9月4日報告 概要 / 二次被害

Timeline

  1. Disclosure date established by the reviewed notice. [s1]

Reported response

  • Reported fact

    External investigation is complete and migration to a new platform is underway.

    [s1]9月4日報告 概要 / 二次被害

Evidence relevant to prevention

Insufficient evidence

Undisclosed entry or patch timing prevents an avoidability assessment. Inspect privileges, retrieval logs, retention and deployed configuration using the linked rules.

Editorial assessment; not a determination of liability. [s1]

Unknowns and AI involvement

AI involvementUnknown

The reviewed disclosures do not establish attacker use of AI.

The revised 78,763 records replaces the initial estimate. Initial entry and overlap among affected customers are undisclosed.

Sources

  1. [s1] K9ナチュラルジャパン · Primary source

    K9ナチュラルジャパン：事故に関する公表資料 ↗

    Reviewed 2026-10-09