> JapanHacked_
[Contained][Severity: Critical][Intrusion]

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

  1. Detected 2025-02-05
  2. Disclosed 2025-03-05
  3. 28 days

Attack or cause

Method
[Intrusion]
Impact
[Data leak]
Entry point
Unknown
Affected, as stated
17,891

Data exposed or at risk

[Name][Phone number][E-mail address][Postal address]

Organizations involved

Open in organization search

Sources

  1. [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