OTOTOY: unauthorized access to the OTOTOY music store
From about 22:00 on 18 October, the OTOTOY music store received threatening access to its systems; operator OTOTOY noticed it at about 14:00 on 19 October and stopped the service. After fixing its systems it reopened at about 22:00 on 20 October, and on 21 October said internal user IDs, emails and sign-up dates of up to about 480,000 members may have been viewed or taken. It found no sign that hashed passwords, purchase history or addresses were taken.
Disclosed
2026-10-21
Organizations involved
1
Leaked or at risk
480K
480,000
Downtime
Unknown
Timeline
- Started 2026-10-18
- Detected 2026-10-19
- Disclosed 2026-10-21
- 3 days
Attack or cause
- Method
- [Intrusion]
- Impact
- [Data leak][Service outage]
- Entry point
- Unknown
Data exposed or at risk
Services hit
Organizations involved
[Breached][Critical]Tokyo, ShibuyaInformation and communications480,000 leaked
OTOTOY Inc.
Sources
- [1][Official]不正アクセスによるお客様情報漏洩の可能性に関するお知らせOTOTOY · 2026-10-21