Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

Exegy

Claimed by Everest · listed 7 months ago

7m
Age
since listed · data leaked

Status timeline

  1. ListedDec 2, 2025
  2. Data leakeddate unknown

At a glance

Group
Everest
Status
Data leaked
Country
United States
Sector
Technology
Listed on leak site
Dec 2, 2025

About the victim

AI dossier — public-source company profile

Exegy is a U.S.-based financial technology company specializing in high-performance market data processing, ticker plant solutions, and trading infrastructure for financial institutions. The company provides hardware-accelerated and software-defined solutions for real-time market data normalization and analytics. It serves a range of capital markets clients including exchanges, broker-dealers, and hedge funds.

Industry
Financial Technology & Market Data Infrastructure
Employees
51-200
Founded
2000

Attack summary

Severity: high — Exegy operates in financial technology and market data infrastructure serving capital markets participants; confirmed data publication by a ransomware group targeting a fintech firm handling sensitive trading and financial data constitutes a high-severity disclosure, even without explicit enumeration of data types in the post.

The Everest ransomware group claims to have attacked Exegy and has listed the disclosure as data_published, indicating exfiltration and publication of data. The leak post itself contains minimal detail, but the disclosed status suggests data has been released publicly.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Potentially exfiltrated business data
  • Internal company files

Original description

AI-summarised, not from the leak post

Exegy, Inc. is a technology firm providing managed services and real-time market data solutions. The company delivers hardware-accelerated appliances, cloud-based services, and historical market data for applications in trading, risk management, and market surveillance. Exegy serves firms globally in the financial services sector, including traders, market makers, and brokers.

The leak post

captured from the group's site
© 2026, All rights reserved
Citizens Bank - Database Leaked 
Evaluate a Norstella company - Database Leaked 
Studio Marchi - Studio Professionale Associato - Database Leaked 
Super AI - Database Leaked 
Complete Aircraft Group - Database Leaked 
Umiles Group - Database Leaked 
K Subsea Group - Database Leaked 
Parque Eólico Toabré - Database Leaked 
PT Brantas Abipraya - Database Leaked 
Straight Line Logistics - Database Leaked 
First Priority Group - Database Leaked 
Hyundai Elevator - Database Leaked 
UD Trucks - Database Leaked 
McDonalds India - Database Leaked 
Tsunami Tsolutions - Database Leaked 
Atlas Air: MUSE INSECURE - Database Leaked 
Iron Mountain - Database Leaked 
Hosowaka Micron Group - Database Leaked 
Shinwa Co Ltd - Database Leaked 
SIGMA Processing Group - Database Leaked 
Acu Trans Solutions LLC - Database Leaked 
GIBSIN Engineers - Database Leaked 
ASRock Rack - Database Leaked 
Reeves Information Technology - Database Leaked 
WANCHI STEEL INDUSTRIAL - Database Leaked 
GC Accounting - Database Leaked 
National Money Mart Company - Database leaked 
Virginia Records - Database Leaked 
Morgan Records Management - Database leaked 
ELC Electroconsult SpA - Databas…

Sources

Source

Indexed 7 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

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

  • December 2, 2025Exegy 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

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, Exegy is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Everest means Exegy 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, CISA (United States), 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.