Was Cooperative Des Techniciens Ambulanciers De La Monte hit by ransomware?

Cooperative Des Techniciens Ambulanciers De La Monte was listed by the Storm 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 Storm ransomware group?

Storm 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 Cooperative Des Techniciens Ambulanciers De La Monte breach?

Storm published data attributed to Cooperative Des Techniciens Ambulanciers De La Monte. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Coopérative Des Techniciens Ambulanciers De La Montérégie (CETAM)

listed as Cooperative Des Techniciens Ambulanciers De La Monte · Claimed by Storm · listed 4 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedOct 8, 2026
Data leakeddate unknown

At a glance

Group: Storm
Status: Data leaked
Country: Canada
Sector: Healthcare
Listed on leak site: Oct 8, 2026

About the victim

AI dossier — public-source company profile

CETAM is the largest prehospital care employer in Montérégie, Quebec, operating as a cooperative of over 400 ambulance technicians and paramedics since 1988. The organization responds to approximately 20,000 emergency calls annually across multiple municipalities in the region, providing emergency medical services on a cooperative model where workers are member-owners.

Industry: Emergency Medical Services & Ambulance Operations
Address: 310 Rue Lawrence, Greenfield Park, QC J4V 2Z6, Canada
Employees: 201-500
Founded: 1988

Attack summary

Severity: medium — Healthcare organization with operational significance (emergency services), but the leak post provides no details of what data was exfiltrated, no proof files mentioned, and no specific sensitive data types confirmed. Classification as medium reflects the sector sensitivity and breach confirmation, tempered by lack of published evidence or data specifics.

Storm claims to have breached CETAM and exfiltrated data. The leak post does not specify which data categories were taken, the scale of exfiltration, or whether encryption occurred.

medium

What the group claims

CETAM is the largest employer in prehospital care in Montérégie, comprising over 400 ambulance technicians and paramedics. Founded in 1988, it operates on a cooperative model where all workers are members, allowing them to participate in decision-making and benefit from annual financial returns. The organization serves a wide territory, responding to nearly 20,000 calls annually across multiple municipalities. CETAM is dedicated to providing high-quality emergency medical services to the local population. The company headquarters is located in 310 Rue Lawrence, Greenfield Park, QC J4V 2Z6, Canada. 201-500 Employees

Sources

Leak posthttp://yqhecvqtdvq6p7duqcgw2qca77spbgakxcoibtx6zpvfshltsbbbhfqd.onion/company/6ac6539b017ad22f3de0f1e8

Source

Indexed 4 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 Storm

Storm is a ransomware group first observed in August 2026, operating with an apparent financial motivation based on its targeting profile, though limited public documentation exists given its recent emergence and relatively small victim footprint. The group has claimed or been attributed to attacks against at least six known victims, with the United States representing its primary target geography. Storm has demonstrated a preference for targeting the healthcare and manufacturing sectors, alongside a broader category of other industries, suggesting an opportunistic rather than highly specialized targeting philosophy. Due to the group's recent emergence and limited victim count, comprehensive technical details regarding its initial access vectors, encryption methodology, tooling, or affiliation with known threat actor ecosystems have not yet been formally documented by CISA, the FBI, Mandiant, or other major threat intelligence publishers as of the time of this writing. No confirmed RaaS infrastructure, dark web leak site activity, or law enforcement actions against the group have been publicly attributed or reported in open sources. Given its nascent operational timeline beginning in 2026, Storm should be monitored as an emerging threat, particularly within the healthcare sector where ransomware attacks carry significant operational and patient safety implications, but analysts should treat any further characterization beyond the known victim and targeting data with caution pending additional corroborating intelligence. The group has been linked to 84 public disclosures across our corpus. First observed on a leak site on August 7, 2026; most recent post October 8, 2026. The operation is currently active.

Timeline of this disclosure

October 8, 2026Cooperative Des Techniciens Ambulanciers De La Monte listed by Storm on the group's public leak site

Other recent disclosures by Storm

Storm has been linked to 84 public victims on Darkfield. A sample of the most recent:

See the full Storm dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,610 disclosures indexed across all operators we track. Geographically, Cooperative Des Techniciens Ambulanciers De La Monte is reported in Canada, a country with 320 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Storm means Cooperative Des Techniciens Ambulanciers De La Monte 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 Storm'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.