Disclosure context

About worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 155 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post May 12, 2026. The operation is currently active.

Timeline of this disclosure

March 20, 2026Legacy Health LLC listed by worldleakson the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, Legacy Health LLC 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

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Legacy Health LLC

Claimed by worldleaks · listed 2 months ago

Age

since listed · data leaked

Status timeline

Listed
Mar 20, 2026
Data leaked

At a glance

Group: worldleaks
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Mar 20, 2026

About the victim

AI dossier — public-source company profile

Legacy Health LLC is a US-based healthcare revenue cycle management (RCM) company headquartered in Addison, Texas. With over 20 years of operation, the company provides end-to-end RCM services including coding accuracy, claims management, and predictive analytics to US healthcare providers, managing over $1 billion in annual accounts receivable. It serves as a financial operations partner to healthcare providers rather than a direct patient care provider.

Industry: Healthcare Revenue Cycle Management (RCM)
Address: 15851 Dallas Parkway, Suite 600, Addison, TX 75001

Attack summary

Severity: high — Legacy Health LLC handles financial and claims data for US healthcare providers managing $1B+ in annual AR; as an RCM intermediary, a confirmed data publication likely exposes sensitive provider financial records, patient billing data, and potentially protected health information (PHI), making this high severity. Insufficient detail to elevate to critical without confirmed PII/PHI volume.

The worldleaks group claims to have obtained and published data belonging to Legacy Health LLC, with the disclosure status recorded as data_published. The leak post contains AI-generated descriptive content rather than specific claims about encryption or exfiltration methods, and no ransom amount or data size was stated.

high

Data the group says was taken

AI dossier — extracted from the leak post

Undisclosed company data

Original description

AI-summarised, not from the leak post

"Legacy Health LLC" is a healthcare company that aims to provide high-quality healthcare services and improve health conditions. It offers a variety of healthcare services such as hospital care, medical clinics, home health services, and more. It focuses on promoting a healthy lifestyle, preventing disease, and managing chronic conditions. The company also emphasizes customer satisfaction, quality care, transparency, and integrity in their services.

Sources

Victim sitelegacyhealthllc.com
Leak posthttps://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/8893922294

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.