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NTT DOCOMO

NTT DOCOMO Vendor Cyber Rating & Cyber Score

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NTT DOCOMO, Japan's largest telecommunications company, provides innovative, convenient and secure mobile services that enable customers to realize smarter lives. The company serves over 73 million customers in Japan via advanced wireless networks, including a nationwide LTE network and one of the world's most progressive LTE-Advanced networks. DOCOMO is a world-leading developer of 5G networks, which it plans to deploy in the 2020s by leveraging network function virtualization (NFV) and other technologies. DOCOMO is also driving innovation in NFC infrastructure and services, emerging IoT solutions and many other mobile-related initiatives. Outside Japan, the company provides technical and operational expertise to mobile operators and


NTT DOCOMO A.I CyberSecurity Scoring

Incident Details
NTT DOCOMO
Company Information
Website:https://www.docomo.ne.jp/english/
Employees number:1,625
Number of followers:11,251
NAICS:517
Industry Type:Telecommunications
Homepage:ne.jp
Cyber Premium EstimationGet Supply Chain
NTT DOCOMO Risk Score (AI oriented)
Between 650 and 699
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NTT DOCOMOTelecommunications
Updated:
29/03/2026
697/1000
Weak
B
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
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NTT DOCOMO Global Score (TPRM)
xxxx
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NTT DOCOMOTelecommunications
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Findings

NTT DOCOMO
NTT DOCOMOWeak
Current Score
697B (WEAK)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JUNE 2026
701Before Incident
MAY 2026
698Before Incident
APRIL 2026
698Before Incident
MARCH 2026
697Before Incident
FEBRUARY 2026
696Before Incident
JANUARY 2026
695Before Incident
DECEMBER 2025
691Before Incident
NOVEMBER 2025
691Before Incident
OCTOBER 2025
690Before Incident
SEPTEMBER 2025
688Before Incident
AUGUST 2025
687Before Incident
JULY 2025
685Before Incident
SEPTEMBER 2023
758Before Incident
Ransomware
01 Sep 2023 • NTT DOCOMO
ntt-docomo

Ransomware Attack on NTT Docomo by Ransomed.vc

644After Incident
CRITICAL-114
NTT02621023
The renowned ransomware group Ransomed. vc reported a new victim today in the form of the major Japanese telecommunications company NTT Docomo in response to the newly disclosed Sony data leak. Notably, the statement coincided nearly exactly with the release of additional Sony data leaks that shed some light on the data breach's predecessor. The largest NTT Docomo is being asked to pay $1,015,000 to the bad actors. The bad guys released the stolen data after Sony declined to fulfill the ransom demands. It was discovered that if businesses don't pay, hackers will release the data they've stolen, which could result in regulatory penalties that occasionally exceed the ransom.
INCIDENT DETAILS -
TYPE
Ransomware
MOTIVATION
Financial
IMPACT
Sony data leaks
REFERENCES
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