Disclosure context

About Ransomedvc

Ransomedvc is a financially-motivated ransomware group that emerged in August 2023, representing one of the newer entrants in the ransomware ecosystem with a documented victim count of 68 organizations. Given the group's recent emergence and limited public documentation from major cybersecurity organizations, specific details about their country of origin and operational structure remain unclear, though their targeting patterns suggest they operate as an independent group rather than a established RaaS operation. The group demonstrates a preference for targeting critical infrastructure sectors, particularly focusing on Food & Agriculture and Healthcare organizations across a geographically diverse range of countries including Bulgaria, Brazil, Japan, Australia, and Russia, indicating either a broad opportunistic approach or the use of automated scanning tools to identify vulnerable systems. While comprehensive details about their specific attack methodologies, encryption techniques, and whether they employ double or triple extortion tactics have not been extensively documented by major threat intelligence firms, their targeting of healthcare and food sector organizations suggests they may leverage the critical nature of these services to pressure victims into payment. The group's notable campaign activity appears concentrated in their operational period since mid-2023, though no major high-profile attacks or significant law enforcement actions have been publicly reported by CISA, FBI, or other authoritative sources. Ransomedvc appears to remain active as of the latest available intelligence, though their relatively recent emergence means their long-term operational patterns and potential for rebranding or law enforcement disruption remain to be observed. The group has been linked to 68 public disclosures across our corpus. First observed on a leak site on August 21, 2023; most recent post June 7, 2024. The operation is currently inactive.

Timeline of this disclosure

October 6, 2023NTT Docomo listed by Ransomedvcon the group's public leak site

Records: 310.000 employees

Sector and geography

This disclosure adds to ransomware activity in the Telecommunications sector, which has 17 disclosures indexed across all operators we track. Geographically, NTT Docomo is reported in Japan, a country with 108 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

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NTT Docomo

Claimed by Ransomedvc · listed 3 years ago

310.000 employees

Records

31m

Age

since listed · data leaked

Status timeline

Listed
Oct 6, 2023
Data leaked

At a glance

Group: Ransomedvc
Status: Data leaked
Country: Japan
Sector: Telecommunications
Listed on leak site: Oct 6, 2023
Records: 310.000 employees

About the victim

AI dossier — public-source company profile

NTT Docomo is a major telecommunications carrier operating under NTT (Nippon Telegraph and Telephone Corporation), one of the world's largest telecom groups with approximately 310,000 employees worldwide. The company provides a wide range of telecommunications services primarily in Japan and is part of a group trusted by 88% of Fortune 500 top-100 companies. NTT Docomo is a leading mobile and digital services provider in the Japanese market.

Industry: Telecommunications
Employees: 310000

Attack summary

Severity: high — NTT Docomo is a critical telecommunications infrastructure provider serving tens of millions of users in Japan; data_published status indicates confirmed exfiltration rather than a mere listing, and the scale of the organisation means any confirmed breach carries significant impact, though the specific nature and volume of published data is not detailed in the post.

RansomedVC claims to have compromised NTT Docomo and has published data ('data_published' status), asserting access to company information. The leak post does not specify the volume of exfiltrated data or whether encryption was also performed.

high

Data the group says was taken

AI dossier — extracted from the leak post

Corporate business data
Internal company information

What the group claims

With approximately 310,000 employees worldwide, NTT (Nippon Telegraph and Telephone Corporation) is one of the world’s leading telecommunications carriers. It is chosen by as many as 88% of the top 100 companies in the Fortune Global Business Ranking “Fortune 500”, an annual U.S. business magazine. We offer a wide range of services in Japan, from…

Source

Indexed 3 years ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.