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 2, 2026Armstrong George Cohen Will Ophthalmology listed by qilinon 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, Armstrong George Cohen Will Ophthalmology 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

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Armstrong George Cohen Will Ophthalmology

Claimed by qilin · listed 18 days ago

18d

Age

since listed · data leaked

Status timeline

Listed
May 2, 2026
Data leaked

At a glance

Group: qilin
Status: Data leaked
Country: US
Sector: Healthcare
Listed on leak site: May 2, 2026

About the victim

AI dossier — public-source company profile

Armstrong George Cohen Will Ophthalmology is a full-service ophthalmology practice with offices in Hatboro and Abington, Pennsylvania, serving Bucks County, Montgomery County, and the greater Philadelphia area. The practice provides comprehensive eye care including cataract surgery, glaucoma management, retina services, cornea treatment, oculoplastic surgery, and routine eye exams. Its physicians are affiliated with Wills Eye Hospital and Abington Jefferson Health.

Industry: Ophthalmology & Eye Care
Address: 345 North York Road, Hatboro, PA 19040 (primary); 1550 Old York Road, Abington, PA 19001 (secondary)

Attack summary

Severity: critical — The victim is a healthcare provider subject to HIPAA; 'data_published' status indicates confirmed exfiltration and public release of data that almost certainly includes protected health information (PHI) and patient PII at scale, meeting the critical threshold.

The Qilin ransomware group claims to have attacked Armstrong George Cohen Will Ophthalmology, with the disclosure status recorded as 'data_published', indicating exfiltration and publication of data. No specific ransom amount or data volume was stated in the leak post.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient medical records
HIPAA-regulated health information
Patient contact and billing information
Staff and physician records

What the group claims

N/A

The leak post

captured from the group's site

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Sources

Source

Indexed 18 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.