Disclosure context

About qilin

Qilin is a ransomware group that emerged in October 2022, operating with primarily financial motivations through targeted attacks against organizations across multiple sectors. The group appears to operate independently with limited public information available regarding their specific country of origin or affiliations to other ransomware families. Qilin employs double extortion tactics, typically exfiltrating sensitive data before deploying their encryption payload, though specific details about their initial access vectors and technical tools remain less documented in public security research. The group has demonstrated a broad targeting approach, with their 1645 known victims spanning multiple countries including the United States, France, Canada, United Kingdom, and Germany, with particular focus on manufacturing, technology, healthcare, and business services sectors. Based on available intelligence reporting, Qilin remains an active threat as of recent assessments, continuing their ransomware operations without significant reported law enforcement disruption. The group has been linked to 1,858 public disclosures across our corpus. First observed on a leak site on October 8, 2022; most recent post May 21, 2026. The operation is currently active.

Timeline of this disclosure

May 13, 2026Mayer listed by qilinon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, Mayer is reported in US, a country with 2,713 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

Mayer LLP

listed as Mayer · Claimed by qilin · listed 7 days ago

Age

since listed · data leaked

Status timeline

Listed
May 13, 2026
Data leaked

At a glance

Group: qilin
Status: Data leaked
Country: US
Sector: Not Found
Listed on leak site: May 13, 2026

About the victim

AI dossier — public-source company profile

Mayer LLP is a multi-office law firm headquartered in Dallas, Texas, with additional locations in Albuquerque, Fayetteville, Houston, San Antonio, and Waco. The firm provides legal services across practice areas including appellate, corporate & securities, healthcare, immigration, labor & employment, litigation, real estate, and tax. It serves clients in industries such as construction, energy, insurance, manufacturing, retail/restaurant/hospitality, and transportation.

Industry: Law Firms & Legal Services
Address: Principal Office: Dallas, TX (additional offices in Albuquerque, Fayetteville, Houston, San Antonio, Waco)

Attack summary

Severity: medium — The victim is a law firm handling sensitive legal matters across regulated industries (healthcare, immigration, employment), making potential data exposure high-sensitivity; however, no proof files, no data volume, and no confirmed exfiltration details have been published, limiting severity to medium.

The Qilin ransomware group has listed Mayer LLP as a victim with a disclosure status of 'data_published'; however, the leak post shows 0 proof photos and no data size is stated, indicating minimal substantiated proof of exfiltration has been publicly released at this time.

medium

What the group claims

N/A

The leak post

captured from the group's site

Qilin blog Sorting Created At Name Bluize Software Company url Zoom Info May 13, 2026 0 photos Learn More Mayer Law Firms & Legal Services Company url Zoom Info May 13, 2026 0 photos Learn More Spirit Medical Transport Ambulance Services Company url Zoom Info May 13, 2026 0 photos Learn More Domaine Des Tournels Manufacturing Company url May 13, 2026 0 photos Learn More Johnson Carter Architects Architecture, Engineering & Design Company url Zoom Info May 13, 2026 0 photos Learn More LTJ Industrial Services Industrial Machinery & Equipment Company url Zoom Info May 13, 2026 0 photos Learn More Brand X Hydrovac Services Civil Engineering Construction Company url Zoom Info May 13, 2026 0 photos Learn More John G Yphantides A Professional Law Law Firms & Legal Services Company url Zoom Info May 13, 2026 0 photos Learn More One Legal Law Firms & Legal Services Company url Zoom Info May 13, 2026 0 photos Learn More The Gravity Group Architecture, Engineering & Design Company url Zoom Info May 12, 2026 3 photos Learn More Mediapost Spain Advertising & Marketing Company url Zoom Info May 12, 2026 13 photos Learn More + 6 more AppDirect Software Company url Zoom Info May 11, 2026 0 photos …

Sources

Source

Indexed 7 days 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.