Disclosure context

About radar

Radar is an emerging ransomware group that first appeared in September 2025, operating with apparent financial motivations based on their targeting patterns across multiple sectors and countries. The group's origin and affiliations remain unclear due to limited public documentation from established threat intelligence sources, though their geographic targeting suggests a focus on English-speaking nations and select international markets. Based on available victim data, Radar appears to employ opportunistic targeting methods that have successfully compromised 23 organizations across diverse sectors including construction, financial services, transportation/logistics, and technology, with operations spanning the United States, United Kingdom, Australia, Kuwait, and other regions. The group's attack methodology, encryption techniques, and whether they employ double or triple extortion tactics have not been extensively documented by major threat intelligence firms or law enforcement agencies. No significant high-profile campaigns, major ransoms, or law enforcement disruption actions against Radar have been publicly reported by CISA, FBI, or established security research organizations. Given the group's recent emergence and limited public intelligence reporting, Radar's current operational status and long-term capabilities remain under assessment by the cybersecurity community. The group has been linked to 26 public disclosures across our corpus. First observed on a leak site on September 10, 2025; most recent post May 18, 2026. The operation is currently active.

Timeline of this disclosure

September 11, 2025Compagnie des Guides de Chamonix listed by radaron the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 159 disclosures indexed across all operators we track. Geographically, Compagnie des Guides de Chamonix is reported in France, a country with 472 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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Compagnie des Guides de Chamonix

Claimed by radar · listed 8 months ago

Age

since listed · data leaked

Status timeline

Listed
Sep 11, 2025
Data leaked

At a glance

Group: radar
Status: Data leaked
Country: France
Sector: Hospitality and Tourism
Listed on leak site: Sep 11, 2025

About the victim

AI dossier — public-source company profile

Compagnie des Guides de Chamonix is one of the oldest and most renowned mountain guiding organizations in the world, founded in 1821 in Chamonix-Mont-Blanc, France. It provides professional alpine guiding services including mountaineering, skiing, and hiking in the Mont Blanc massif and beyond. The organization represents a cooperative of certified mountain guides operating in the French Alps.

Industry: Mountain Guiding & Outdoor Tourism
Address: Maison de la Montagne, 190 Place de l'Église, 74400 Chamonix-Mont-Blanc, France
Employees: 11-50
Founded: 1821

Attack summary

Severity: medium — Data has been published (disclosed status confirmed), indicating exfiltration occurred, but the specific data types, volume, and sensitivity are unknown. No regulated or large-scale PII confirmed from available evidence.

The Radar ransomware group has listed Compagnie des Guides de Chamonix as a victim with a disclosed status of data_published, indicating data exfiltration and/or publication. The specific nature and volume of exfiltrated data are not detailed in the truncated leak post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Internal business documents
Client/customer records
Employee data
Financial records

What the group claims

Chamonix Office +33 (0)4 50 53 00 88, Maison de la montagne, 190 place de l'église, 74400 Chamonix Argentière Office +33 (0)4 50 54 17 94 , 24 Route du village, 74400 Argentière

The leak post

captured from the group's site

TUAN LE Construction Company Limited
Chek Tan and Company, LLP
Fouad Alghanim & Sons Group of Companies Holding W.L.L.
R F Owens Co, Inc./ Trucchi's Supermarkets Distribution Center
Compagnie des Guides de Chamonix
Namibia | Epia Financial Services | Windhoek
Menten Truck Service N.V., Hoeselt, Belgium
ROBERT G. DASHIELL, JR., P.E., INC

Screenshot of the leak post

Leak screenshot for Compagnie des Guides de Chamonix

Sources

Victim sitechamonix-guides.com
Leak posthttp://3bnusfu2lgk5at43ceu7cdok5yv4gfbono2jv57ho74ucjvc7czirfid.onion/leaked-data/?id=63

Source

Indexed 8 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.