Was Evaluate a Norstella company hit by ransomware?

Evaluate a Norstella company was listed by the Everest ransomware operation (Norway), 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 Everest ransomware group?

Everest 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 Evaluate a Norstella company breach?

Everest published data attributed to Evaluate a Norstella company. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Evaluate (a Norstella company)

listed as Evaluate a Norstella company · Claimed by Everest · listed 4 months ago

Age

since listed · data leaked

Status timeline

ListedMar 15, 2026
Data leakeddate unknown

At a glance

Group: Everest
Status: Data leaked
Country: Norway
Listed on leak site: Mar 15, 2026

About the victim

AI dossier — public-source company profile

Evaluate is a life sciences market intelligence company and a subsidiary of Norstella, a group of data and analytics businesses serving the pharmaceutical and healthcare industries. Evaluate provides commercial data, forecasts, and analytics on the global pharmaceutical and medical device markets. Norstella is a US-headquartered organisation though Evaluate has historically had significant operations in the UK and internationally.

Industry: Healthcare Data & Market Intelligence

Attack summary

Severity: high — Evaluate handles sensitive pharmaceutical commercial data, forecasts, and potentially client business intelligence at scale. The 'data_published' status indicates confirmed exfiltration and publication, warranting a high severity rating even without explicit data inventory details from the truncated post.

The Everest ransomware group has listed Evaluate (a Norstella company) as a victim with a disclosed/data-published status, implying data exfiltration has occurred or data has been published; however, the leak post excerpt provides no specific detail on the nature or volume of the data claimed.

high

Original description

AI-summarised, not from the leak post

N/A

The leak post

captured from the group's site

© 2026, All rights reserved
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Sources

Leak posthttp://ransomocmou6mnbquqz44ewosbkjk3o5qjsl3orawojexfook2j7esad.onion/news/Evaluate_a_Norstella_company/

Source

Indexed 4 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.

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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 369 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post May 29, 2026. The operation is currently active.

Timeline of this disclosure

March 15, 2026Evaluate a Norstella company listed by Evereston the group's public leak site

Other recent disclosures by Everest

Everest has been linked to 369 public victims on Darkfield. A sample of the most recent:

See the full Everest dossier →

Sector and geography

Geographically, Evaluate a Norstella company is reported in Norway, a country with 41 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Everest means Evaluate a Norstella company 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, NorCERT (Norway), 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.