> JapanHacked_
[Ongoing][Severity: Moderate][Credential abuse]

Square Enix: unauthorized logins to Square Enix accounts

On 19 October, Square Enix said it had found unauthorized logins to Square Enix accounts using email addresses or IDs and passwords apparently leaked from other services. It restricted logins on accounts suspected of being affected and asked users who reuse passwords to change them and use one-time passwords. It said it may reset passwords for all accounts if the attacks keep increasing. No numbers were given.

Disclosed

2026-10-19

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

Timeline

  1. Disclosed 2026-10-19
  2. 1 days

Attack or cause

Method
[Credential abuse]
Impact
Entry point
Stolen credentials

Data exposed or at risk

–

Services hit

Organizations involved

Open in organization search

Sources

  1. [1][News]スクエニアカウントに不正ログイン、他社で流出の情報使用か 全アカウントのパスワード強制リセットも視野にITmedia NEWS · 2026-10-19
  2. [2][News]スクエニ、アカウントへの不正ログイン確認 パスワード変更呼びかけCNET Japan · 2026-10-20