King Printers: cloud credentials abused for AI calls; investigation finds no customer-data exposure
Cloud credentials were abused for AI calls on 10 September. The website temporarily closed and reopened; the final report finds no customer-data acquisition or transfer.
Disclosed
2026-09-14
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
Attack and service restoration
Between 06:51 and 13:44 on 10 September, an attacker abused infrastructure credentials to make large numbers of AI-service calls from multiple IP addresses. Provider limits stopped the abuse; the compromised credentials and attacker-created credentials were deleted that day. [2]
For safety checks, the site and related functions closed at 18:00 on 10 September and reopened at 16:00 on the 14th. The final 9 November investigation found no access to customer databases, storage or servers, tampering, theft or data transfers to suspicious IPs. Payment data was not held; customer passwords were hashed. Planned measures include temporary infrastructure credentials instead of static ones. [1] [2]
Timeline
- Started, Detected 2026-09-10
- Disclosed 2026-09-14
- 4 days
Attack or cause
- Method
- [Credential abuse]
- Impact
- [Service outage]
- Entry point
- Stolen credentials
Data exposed or at risk
–
Services hit
Organizations involved
[Breached][Moderate]Osaka, Osaka, NishiyodogawaManufacturing
King Printers Inc.
Sources
- [1][Official]不正アクセス検知に伴うシステム停止・サービス再開および調査状況のお知らせKing Printers Inc. · 2026-09-14
- [2][Official]不正アクセス検知に伴う調査結果および再発防止策のご報告【最終報】King Printers Inc. · 2026-11-09