> JapanHacked_
[Investigating][Severity: Moderate][Intrusion]

Arc System Works: data leakage

On May 14 the company disclosed that unauthorized access to its equipment had resulted in external leakage of company data. As of May 12, leakage of users' personal or player-account information had not been confirmed. Cause and scope remained under external investigation, with no count published.

Disclosed

2025-05-14

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

Timeline

  1. Disclosed 2025-05-14
  2. 1 days

Attack or cause

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

Data exposed or at risk

–

Organizations involved

Open in organization search

Sources

  1. [1][Official]不正アクセスによるデータ流出に関してArc System Works Co., Ltd. · 2025-05-14