Disclosure context

About Embargo

Embargo is a ransomware group that emerged in April 2024, operating with primarily financial motivations and demonstrating a focus on high-value targets across multiple sectors. The group has been observed targeting victims predominantly in the United States, Singapore, India, and France, with particular emphasis on technology, healthcare, manufacturing, business services, and financial sectors. Given the group's recent emergence and limited public documentation from major threat intelligence sources, specific details about their country of origin, operational structure, and technical methodologies remain largely unconfirmed by established security research organizations. With 37 known victims identified since their emergence, Embargo appears to follow established ransomware operational patterns typical of financially-motivated cybercriminal groups, though comprehensive analysis of their attack vectors, encryption methods, and extortion tactics has not yet been extensively documented by major cybersecurity firms or government agencies. The group's targeting of critical infrastructure sectors including healthcare and financial services aligns with broader ransomware trends observed throughout 2024, though specific notable campaigns or high-profile attacks have not been widely reported in public threat intelligence reporting. As of current observations, Embargo appears to remain active, though the limited timeframe since their emergence and sparse public documentation makes definitive assessment of their operational status challenging without additional confirmed reporting from established threat intelligence sources. The group has been linked to 38 public disclosures across our corpus. First observed on a leak site on April 21, 2024; most recent post March 31, 2026. The operation is currently active.

Timeline of this disclosure

March 26, 2026ludlums.com listed by Embargoon the group's public leak site

Data size: 5 TB

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, ludlums.com is reported in United States, a country with 7,392 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

← All victims

Ludlum Measurements, Inc.

listed as ludlums.com · Claimed by Embargo · listed 2 months ago

5 TB

Data size

55d

Age

since listed · data leaked

Status timeline

Listed
Mar 26, 2026
Data leaked

At a glance

Group: Embargo
Status: Data leaked
Country: United States
Sector: Technology
Listed on leak site: Mar 26, 2026
Data size: 5 TB

About the victim

AI dossier — public-source company profile

Ludlum Measurements, Inc. (LMI) designs and manufactures radiation detection instruments and technologies, founded in 1962 and headquartered in Sweetwater, Texas. The company serves a broad range of applications including health physics, medical physics, border security, emergency response, and personnel/material monitoring. LMI holds ISO 9001 certification and ISO/IEC 17025 accreditation, and supplies equipment to domestic and international customers.

Industry: Radiation Detection & Measurement Equipment Manufacturing
Address: Sweetwater, Texas, United States
Founded: 1962

Attack summary

Severity: critical — Ludlum Measurements supplies radiation detection equipment for border security, emergency response, and nuclear safety applications; exfiltration of 5 TB including full source code and client data from a defense/national-security-adjacent manufacturer represents a critical exposure of sensitive technical IP, potential government/military client records, and proprietary radiation detection technology with clear national security implications.

The Embargo ransomware group claims to have exfiltrated 5 TB of data from Ludlum Measurements, Inc., including full source code and client data, with the data now published. No ransom amount was stated.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Full source code
Client data
Unspecified additional data (5 TB total)

What the group claims

Ludlum Measurements, Inc. (LMI), founded in 1962 in Sweetwater, Texas, designs, manufactures, and supplies radiation detection and measurement equipment used w... - We have 5 TB data including full source codes, client data, and more.

Sources

Source

Indexed 2 months 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.