Skip to main content
Darkfield

Ransomware victim disclosure

← All victims

Momentum

listed as Gomomentum.com · Claimed by EndZone · listed 3 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedSep 21, 2026
  2. Data leakeddate unknown

At a glance

Group
EndZone
Status
Data leaked
Listed on leak site
Sep 21, 2026

About the victim

AI dossier — public-source company profile

Momentum is a telecommunications company founded in 2001 that provides cloud-based communication solutions for businesses, including cloud voice services, managed networks, SD-WAN solutions, and Microsoft Teams Phone integration. The company operates globally with offices in New York, Toronto, London, Berlin, Tokyo, Beijing, Sydney, and Dubai, and generates approximately $221.7 million in annual revenue.

Industry
Telecommunications & Cloud Communications
Founded
2001

Attack summary

Severity: critical — Confirmed exfiltration of PII at massive scale (7.5+ million users) combined with operational disruption (58,127 users without internet service). The attack impacts critical infrastructure—a telecommunications provider serving millions—and demonstrates both data theft and active service disruption capability.

EndZone claims to have compromised a diagnostic and provisioning tool used by Momentum through a Multi-Service Operator (MSO), gaining access to personally identifiable information (PII) for over 7.5 million users. The group also claims to have disrupted service by removing modem packages for 58,127 users across the United States and states they possess the ability to restore these services upon contact.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • PII for 7.5+ million users
  • Customer data across all MSOs
  • Modem provisioning records

What the group claims

Revenue: $221.7 million Momentum is a telecommunications company founded in 2001 that provides cloud-based communication solutions for businesses, specializing in cloud voice services, managed networks, SD-WAN solutions, and Microsoft Teams Phone integration. We gained access to a diagnostic and provisioning tool used by Momentum through a compromised Multi-Service Operator (MSO). Upon reconnaissance, we identified multiple critical vulnerabilities throughout the system. This tool controls internet and voice services for millions of users across global markets. We successfully accessed user data for every MSO, exposing personally identifiable information (PII) for over 7.5 million users. They didn't notice the prolonged access or the customer data dump for a while, but when we started deleting modems they noticed. They kept burning access and we gained it back, they'd burn it again. We removed modem packages for 58,127 users across the United States. That's 58,127 people without internet service right now. Families, businesses, students all cut off from the digital world. This is the direct result of their negligence and failure to secure their systems. These services can be restored immediately with the click of a button on our tool but you must reach out. Momentum management should contact us to discuss resolution.

Sources

Source

Indexed 3 hours 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 EndZone

EndZone is a ransomware group first observed in September 2026, operating with an apparent financial motivation based on its targeting profile, though limited public documentation exists given its early stage of activity. The group has claimed two known victims to date, with targeting concentrated in the United States across the Government and Defense and Technology sectors, suggesting a deliberate focus on high-value organizations likely to possess sensitive data and the financial resources or political pressure to meet ransom demands. Due to the group's nascent operational history and limited victim count, no detailed technical attribution, affiliation, or country of origin has been publicly established by CISA, the FBI, Mandiant, or other reputable security research organizations at this time. Similarly, specific details regarding initial access vectors, tooling, encryption methodology, or extortion tactics have not yet been publicly documented, though the targeting of government and defense entities is consistent with broader ransomware trends involving double extortion and data exfiltration pressure. No notable high-profile campaigns, law enforcement actions, or confirmed ransom figures have been publicly attributed to EndZone as of the time of this profile, and the group should be considered an emerging threat actor under continued monitoring given its sector targeting patterns. The group has been linked to 3 public disclosures across our corpus. First observed on a leak site on September 18, 2026; most recent post September 21, 2026. The operation is currently active.

Timeline of this disclosure

  • September 21, 2026Gomomentum.com listed by EndZone on the group's public leak site

Other recent disclosures by EndZone

EndZone has been linked to 3 public victims on Darkfield. A sample of the most recent:

See the full EndZone dossier →

If your organisation is affected

A listing by EndZone means Gomomentum.com 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.
  • Monitor for the data appearing on EndZone'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.