> JapanHacked_
[Contained][Severity: Critical][Intrusion]

Cool Japan Fund: server intrusion

The fund confirmed unauthorized server access on May 1 and restricted external access. It reported the incident to police, the privacy commission and the economy ministry, and announced an expert investigation into cause and scope. The initial notice did not identify affected data or publish a count. The August 28 final report identified network-device entry and possible exposure of 25 shareholder-related, about 1,080 investee-related and about 100 officer/employee records, including names, addresses, contacts, HR information and health-check results. Definitive exfiltration evidence and secondary harm were unconfirmed.

Disclosed

2025-05-12

Organizations involved

1

Leaked or at risk

1.1K

1,080

Downtime

Unknown

Timeline

  1. Detected 2025-05-01
  2. Disclosed 2025-05-12
  3. 11 days

Attack or cause

Method
[Intrusion]
Impact
[Data leak]
Entry point
Unknown

Data exposed or at risk

[Name][Postal address][Employment][Health data]

Organizations involved

Open in organization search

Sources

  1. [1][Official]当機構サーバへの不正アクセスについてのお知らせとお詫びCool Japan Fund Inc. · 2025-05-12
  2. [2][Official]Notice Regarding Unauthorized Access to Our Server (Final Report)Cool Japan Fund · 2025-08-28