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LanTroVision

listed as lantro.com · Claimed by Devman · listed 1 year ago

13m
Age
since listed · data leaked

Status timeline

  1. ListedMay 31, 2025
  2. Data leakeddate unknown

At a glance

Group
Devman
Status
Data leaked
Country
Japan
Sector
Technology
Listed on leak site
May 31, 2025

About the victim

AI dossier — public-source company profile

LanTroVision is an ICT solution provider specializing in data and voice communication infrastructure, including structure cabling, design, installation, and maintenance services. Established in 1990 and acquired by MIRAIT ONE Corporation (Tokyo Stock Exchange listed) in June 2016, the company serves Fortune 500 companies, financial institutions, data centers, and healthcare organizations across Asia-Pacific and North America.

Industry
Information & Communication Technology (ICT) Infrastructure & Solutions
Founded
1990

Attack summary

Severity: medium — Data disclosed and published (not encryption-only), but no specific proof files/screenshots, data inventory, or sensitive data categories are detailed in the available leak post. Ransom demand suggests operational leverage but lacks concrete evidence of high-value exfiltration.

The ransomware group devman claims to have compromised LanTroVision and demands 1.1 million USD. The leak post indicates data has been published, but specific details about encryption status or exfiltrated data categories are not provided in the available excerpt.

medium

What the group claims

1.1 million USD

Sources

Source

Indexed 1 year 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.

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Disclosure context

About devman

The devman ransomware group is a recently emerged threat actor that began operations in April 2025, demonstrating a financially motivated criminal enterprise with a focus on opportunistic targeting across multiple sectors and geographic regions. Given the group's recent emergence and limited public documentation, specific details regarding their country of origin, organizational structure, or potential affiliations with established ransomware-as-a-service operations remain unknown to major cybersecurity agencies and researchers. The group's attack methodology and technical capabilities have not been thoroughly documented by reputable security firms, though their targeting patterns suggest a broad opportunistic approach rather than highly specialized tactics. In the brief period since their emergence, devman has reportedly compromised 184 victims across diverse sectors including technology, healthcare, public sector organizations, and agriculture and food production, with primary targeting concentrated in the United States, France, Svalbard and Jan Mayen, Taiwan, and Thailand, though the inclusion of Svalbard and Jan Mayen in their targeting list may indicate data collection anomalies rather than actual operational focus on this remote Arctic territory. As of current reporting, devman appears to remain an active threat, though the lack of detailed technical analysis or law enforcement advisories suggests they may be operating at a relatively low profile compared to more established ransomware groups. The group has been linked to 184 public disclosures across our corpus. First observed on a leak site on April 6, 2025; most recent post February 4, 2026. The operation is currently active.

Timeline of this disclosure

  • May 31, 2025lantro.com listed by devmanon the group's public leak site

Other recent disclosures by devman

devman has been linked to 184 public victims on Darkfield. A sample of the most recent:

See the full devman dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, lantro.com is reported in Japan, a country with 220 ransomware disclosures in our corpus.

If your organisation is affected

A listing by devman means lantro.com appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, JPCERT/CC (Japan), as required for your jurisdiction.
  • Monitor for the data appearing on devman's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.