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Stadler Rail

Claimed by Everest · listed 3 days ago

2d
Age
since listed · data leaked

Status timeline

  1. ListedAug 5, 2026
  2. Data leakeddate unknown

At a glance

Group
Everest
Status
Data leaked
Country
Switzerland
Sector
Transportation
Listed on leak site
Aug 5, 2026

About the victim

AI dossier — public-source company profile

Stadler Rail is a Swiss manufacturer of railway vehicles headquartered in Bussnang, founded in 1942. The company designs and produces regional trains, intercity trains, trams, metros, and rack railways, supplying operators across Europe, the Americas, and globally. It is known for product families including FLIRT and KISS trains, and also offers signalling technology and maintenance services.

Industry
Rail Vehicle Manufacturing
Address
Bussnang, Switzerland
Founded
1942

Attack summary

Severity: low — Only a listing/announcement with no proof files, no explicit data exfiltration claims, no operational impact stated, and no ransom demand. The leak post excerpt contains only generic company background information.

The Everest group claims to have conducted an attack on Stadler Rail. No specific details regarding encryption, exfiltration, or data compromise are provided in the available leak post excerpt.

low

Original description

AI-summarised, not from the leak post

Stadler Rail is a Swiss manufacturer of railway vehicles headquartered in Bussnang, Switzerland. Founded in 1942, the company designs and produces a wide range of trains including regional and intercity trains, trams, metros, and rack railways. It operates globally, supplying rail operators across Europe, the Americas, and beyond, and is recognized for its FLIRT and KISS train families.

Sources

Source

Indexed 3 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.

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Disclosure context

About Everest

Everest is a financially-motivated ransomware group that emerged in September 2021, operating with a focus on profit-driven extortion campaigns against organizations primarily in the United States and Europe. The group's country of origin and specific affiliations remain undocumented in public threat intelligence reporting, though their operational patterns suggest they likely operate as an independent entity rather than a formal ransomware-as-a-service model. Limited public documentation exists regarding Everest's specific attack methodologies, initial access vectors, or technical capabilities, though their victim profile indicates they employ standard ransomware tactics targeting a diverse range of sectors including healthcare, technology, business services, and manufacturing organizations. Since their emergence, Everest has claimed responsibility for attacks against 339 victims across multiple countries, with the United States, United Kingdom, Italy, Germany, and Spain representing their primary geographic targets, though no specific high-profile incidents or major ransoms have been publicly documented by law enforcement or major security firms. As of current reporting, Everest appears to remain an active threat actor, though the limited public intelligence available suggests they operate as a lower-tier ransomware group compared to more prominent and well-documented criminal organizations. The group has been linked to 388 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post August 5, 2026. The operation is currently active.

Timeline of this disclosure

  • August 5, 2026Stadler Rail listed by Evereston the group's public leak site

Other recent disclosures by Everest

Everest has been linked to 388 public victims on Darkfield. A sample of the most recent:

See the full Everest dossier →

Sector and geography

This disclosure adds to ransomware activity in the Transportation sector, which has 47 disclosures indexed across all operators we track. Geographically, Stadler Rail is reported in Switzerland, a country with 39 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Everest means Stadler Rail 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, NCSC-CH (Switzerland), as required for your jurisdiction.
  • Monitor for the data appearing on Everest'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.