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

WOWOW: unauthorized logins to WOWOW WEB accounts; access to My WOWOW and changes to registered information confirmed for some customers

Login attempts to WOWOW WEB accounts with IDs and passwords obtained illegally elsewhere were confirmed, and registered information was changed in some customers' accounts.

Disclosed

2025-12-25

Organizations involved

1

Leaked or at risk

Unknown

Downtime

Unknown

What happened

  1. It announced events suggesting that third parties tried to log in to WOWOW WEB accounts with IDs and passwords obtained illegally elsewhere. Its investigation confirmed access to My WOWOW and changes to registered information in some customers' accounts. [1] [2]

Timeline

  1. Disclosed 2025-12-25
  2. 1 days

Attack or cause

Method
[Credential abuse]
Impact
[Data leak]
Entry point
Stolen credentials

Data exposed or at risk

–

Organizations involved

Open in organization search

Sources

  1. [1][Official]【重要なお知らせ】続報：身に覚えのないログイン通知にご注意ください～第三者による不正ログイン対策に関するお願いWOWOW INC. · 2025-12-25
  2. [2][News]WOWOW WEB アカウントへの不正ログイン 注意呼びかけScanNetSecurity · 2026-01-15 08:05