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logicvein-2025 · Disclosed 2025-12-08

ロジックベイン: unauthorized access and impact

Investigators infer that intrusion through VPN preceded ransomware execution. Potential scope is about 97,338 people; leak-site publication is confirmed for 17,559.

Cause unresolved / undisclosed

Outcome: Confirmed breach

Entry path and evidence

  • Assessment

    Investigators infer that intrusion through VPN preceded ransomware execution.

    [s1]第4報 §§1-3,6
  • Reported fact

    Potential scope is about 97,338 people; leak-site publication is confirmed for 17,559.

    [s1]第4報 §§1-3,6

Timeline

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

Reported response

  • Reported fact

    Measures include disconnecting endpoints, introducing EDR and redesigning authorization and authentication.

    [s1]第4報 §§1-3,6

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 VPN/ransomware route is reported as an assessment; product and precise access mechanism are undisclosed. Published records are a subset of potentially affected people.

Sources

  1. [s1] ロジックベイン · Primary source

    ロジックベイン：事故に関する公表資料 ↗

    Reviewed 2026-10-09