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The Mountain Company

listed as The Mountain · Claimed by Nightspire · listed 2 days ago

1d
Age
since listed · data leaked

Status timeline

  1. ListedJul 27, 2026
  2. Data leakeddate unknown

At a glance

Group
Nightspire
Status
Data leaked
Country
United Kingdom
Listed on leak site
Jul 27, 2026

About the victim

AI dossier — public-source company profile

The Mountain Company is an award-winning UK-based travel operator founded in 2004, specialising in trekking, mountaineering, and cultural tour holidays to the Himalaya and Karakoram regions (Nepal, Bhutan, Pakistan, India, and Burma). They serve an international clientele and offer trips in various styles including camping, teahouse, and luxury lodge options.

Industry
Adventure Travel & Tourism
Founded
2004

Attack summary

Severity: critical — Exfiltration of payment/credit card data, customer PII (CRM), financial records, and payroll data represents regulated sensitive information at scale affecting both the company and its customers.

Nightspire claims to have exfiltrated HR & payroll data, financial and accounting records, payment and credit card data, customer and CRM data, orders and supply chain data, and business application data from The Mountain Company.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • HR & Payroll Records
  • Financial & Accounting Records
  • Payment & Credit Card Data
  • Customer & CRM Data
  • Orders & Supply Chain Data
  • SharePoint & Business Applications

What the group claims

- HR & Payroll Data- Financial & Accounting Records- Payment & Credit Card Data- Customer & CRM Data- Orders & Supply Chain Data- SharePoint & Business Application Data

Sources

Source

Indexed 2 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 nightspire

Nightspire is a ransomware group that first emerged in March 2025 and appears to be primarily financially motivated, having targeted over 215 victims in a relatively short operational timeframe. The group's origin and affiliations remain unclear due to limited public documentation from major cybersecurity organizations, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing. Based on available victim data, Nightspire appears to employ common ransomware attack vectors targeting organizations across multiple sectors, with a particular focus on manufacturing, technology, healthcare, and construction industries, while demonstrating a geographic preference for victims in the United States, India, Taiwan, France, and Hong Kong. The group's rapid victim acquisition rate since their March 2025 emergence suggests an active and potentially effective operational capability, though specific technical details about their attack methodology, encryption techniques, or extortion tactics have not been publicly documented by major threat intelligence firms. Given the recent emergence of this group and limited public reporting from established cybersecurity organizations like CISA, FBI, or Mandiant, Nightspire remains an active threat with insufficient public documentation to fully assess their operational sophistication or organizational structure. The group has been linked to 328 public disclosures across our corpus. First observed on a leak site on March 12, 2025; most recent post July 27, 2026. The operation is currently active.

Also tracked as: NIGHT SPIRE.

Timeline of this disclosure

  • July 27, 2026The Mountain listed by nightspireon the group's public leak site

Other recent disclosures by nightspire

nightspire has been linked to 328 public victims on Darkfield. A sample of the most recent:

See the full nightspire dossier →

Sector and geography

Geographically, The Mountain is reported in United Kingdom, a country with 377 ransomware disclosures in our corpus.

If your organisation is affected

A listing by nightspire means The Mountain 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 (United Kingdom), as required for your jurisdiction.
  • Monitor for the data appearing on nightspire'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.