Was Centre Medical Crowley hit by ransomware?

Centre Medical Crowley was listed by the thegentlemen ransomware operation (Canada), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the thegentlemen ransomware group?

thegentlemen is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Centre Medical Crowley breach?

thegentlemen published data attributed to Centre Medical Crowley. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Centre Médical Crowley

listed as Centre Medical Crowley · Claimed by Thegentlemen · listed 7 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedJun 15, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Canada
Sector: Healthcare
Listed on leak site: Jun 15, 2026

About the victim

AI dossier — public-source company profile

Centre Médical Crowley is a multi-specialty healthcare facility located in Montreal, Quebec, near the McGill University Health Centre (CUSM). It provides comprehensive medical services including family medicine, obstetrics, gynecology, pediatric rheumatology, dermatology, ophthalmology, neurology, pediatric urology, and medical aesthetics, alongside laboratory services via Dynacare.

Industry: Healthcare — Multi-specialty Medical Clinic
Address: Montreal, QC, Canada (near McGill University Health Centre)

Attack summary

Severity: high — Healthcare facility with confirmed data publication involving patient medical records and personal health information (regulated sensitive data under PIPEDA in Canada). Multi-specialty clinic serving families indicates large patient population exposure.

TheGentlemen group claims to have compromised Centre Médical Crowley and published patient and operational data. The group has disclosed data without specifying whether encryption occurred alongside exfiltration.

high

Data the group says was taken

AI dossier — extracted from the leak post

Patient medical records
Personal health information
Appointment/scheduling data
Operational documents

What the group claims

***.ca zoominfo.com/c/centre-médical-crowley/1340359581 Crowley Medical Centre is a premier healthcare facility in Montreal, located just steps away from the McGill University Health Centre (MUHC). They provide comprehensive, specialized medical care across diverse fields, including family medicine, obstetrics, ophthalmology, and rheumatology, alongside advanced medical aesthetics. Their core mission is to deliver exceptional, patient-centered treatments using state-of-the-art technology within a welcoming and highly professional environment

Sources

Victim sitecrowleymd.ca

Source

Indexed 7 hours 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 thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 504 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post June 15, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

June 15, 2026Centre Medical Crowley listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 504 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,593 disclosures indexed across all operators we track. Geographically, Centre Medical Crowley is reported in Canada, a country with 313 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Centre Medical Crowley 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, CCCS (Canada), as required for your jurisdiction.
Monitor for the data appearing on thegentlemen'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.