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Unknown (401 SE Fleetway Dr, Lee's Summit, MO 64081)

Claimed by Gammax · listed 3 hours ago

547GB
Data size
150883 files records
Today
Age
since listed · data leaked

Status timeline

  1. ListedSep 19, 2026
  2. Data leakeddate unknown

At a glance

Group
Gammax
Status
Data leaked
Country
United States
Listed on leak site
Sep 19, 2026
Data size
547GB
Records
150883 files

About the victim

AI dossier — public-source company profile

Unknown company located at 401 SE Fleetway Dr, Lee's Summit, Missouri. No public website or identifying information available from the leak post.

Address
401 SE Fleetway Dr, Lee's Summit, MO 64081, United States

Attack summary

Severity: medium — Confirmed exfiltration of substantial data volume (547 GB, 150k+ files) with published proof of access, but lack of identifying information and data category details prevents assessment of regulatory sensitivity. No operational disruption stated.

Gammax claims to have exfiltrated approximately 150,883 files totaling 547 GB of data from the victim's systems.

medium

Data the group says was taken

AI dossier — extracted from the leak post
  • 150,883 files (nature unspecified)

What the group claims

Entity located at 401 SE Fleetway Dr, Lee's Summit, MO 64081, United States. Complete dataset available including 150,883 files totaling 547GB.

The leak post

captured from the group's site
401 SE Fleetway Dr, Lee's Summit, MO 64081, United States 
Access the complete dataset including 150,883 files (547GB)

Screenshot of the leak post

Leak screenshot for Unknown (401 SE Fleetway Dr, Lee's Summit, MO 64081)

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.

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Disclosure context

About Gammax

Gammax is a ransomware group first observed in July 2026 with an apparently financial motivation, though limited public documentation exists given its nascent operational history and very low victim count. With only two known victims on record, the group remains largely uncharacterized by major threat intelligence organizations such as CISA, FBI, Mandiant, or comparable research bodies, and no definitive attribution regarding country of origin, affiliation with established threat actors, or ransomware-as-a-service infrastructure has been publicly established at this time. Based on available victimology data, Gammax has demonstrated a targeting preference for organizations in Canada and Colombia, with activity concentrated in the Energy and Utilities and Retail and E-Commerce sectors, suggesting either opportunistic targeting of these verticals or a deliberate focus on industries where operational disruption may increase pressure to pay. No specific initial access vectors, encryption methodologies, or extortion tactics have been publicly attributed to this group by authoritative sources, and no notable high-profile campaigns, record ransom demands, or law enforcement actions have been publicly documented against them. Given its July 2026 emergence and minimal victim footprint, Gammax should be considered an emerging and closely monitored threat, though its current operational status, true capabilities, and trajectory remain insufficiently documented to support more definitive analytical conclusions. The group has been linked to 21 public disclosures across our corpus. First observed on a leak site on July 30, 2026; most recent post September 19, 2026. The operation is currently active.

Timeline of this disclosure

  • September 19, 2026Unknown (401 SE Fleetway Dr, Lee's Summit, MO 64081) listed by Gammax on the group's public leak site
Data size
547GB
Records
150883 files

Other recent disclosures by Gammax

Gammax has been linked to 21 public victims on Darkfield. A sample of the most recent:

See the full Gammax dossier →

Sector and geography

Geographically, Unknown (401 SE Fleetway Dr, Lee's Summit, MO 64081) is reported in United States, a country with 3,167 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Gammax means Unknown (401 SE Fleetway Dr, Lee's Summit, MO 64081) 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 Gammax'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.