NTT Communications: corporate customer data may have been exposed
Suspicious logs detected on February 5 led to isolation of compromised equipment by February 15. Contract and contact information for 17,891 corporate customers was potentially exposed; consumer services were excluded. No misuse was confirmed at disclosure. The company was subsequently renamed NTT DOCOMO Business.
Disclosed
2025-03-05
Organizations involved
17891
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Detected 2025-02-05
- Disclosed 2025-03-05
- 28 days
Attack or cause
- Method
- [Intrusion]
- Impact
- [Data leak]
- Entry point
- Unknown
- Affected, as stated
- 17,891
Data exposed or at risk
Organizations involved
[Breached][Major]Tokyo, ChiyodaInformation and communications
NTT DOCOMO Business, Inc.
Sources
- [1][Official]当社への不正アクセスによる情報流出の可能性についてNTT Communications Corporation · 2025-03-05