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Ransomware victim disclosure

All victims

The McKee Group

listed as MCKEEGROUP.NET · Claimed by Cl0p · listed 4 months ago

4m
Age
since listed · data leaked

Status timeline

  1. ListedFeb 7, 2026
  2. Data leakeddate unknown

At a glance

Group
Cl0p
Status
Data leaked
Listed on leak site
Feb 7, 2026

About the victim

AI dossier — public-source company profile

The McKee Group is a family-owned real estate development and property management company based in Springfield, Pennsylvania, with approximately 75 years of operating history. The company operates across multiple segments including commercial office leasing, residential homebuilding, apartment communities, self-storage, 55+ living villages, marina and yacht services, and car wash operations. It has received over 100 industry awards of excellence from local, regional, and national organizations.

Industry
Real Estate Development & Property Management
Address
940 West Sproul Road, Springfield, PA 19064
Founded
1949

Attack summary

Severity: medium — The disclosure status is 'data_published', suggesting some data release has occurred, but there is no detail in the leak post about the type, volume, or sensitivity of data involved; the company handles residential and commercial real estate which may include customer PII and financial records.

Cl0p claims to have attacked MCKEEGROUP.NET and lists the victim under 'data_published' status, indicating data has been released; however, the leak post contains no specific details about encryption, exfiltration methods, or the nature of the data involved.

medium

Original description

AI-summarised, not from the leak post

N/A

Sources

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 Cl0p

The Cl0p (also known as Clop) ransomware group is a financially motivated cybercriminal organization that emerged in March 2020, operating as part of the broader TA505/FIN11 threat landscape and conducting high-impact ransomware campaigns targeting organizations globally. The group is believed to operate from Russian-speaking territories and has been linked to the prolific TA505 cybercriminal consortium, functioning as a Ransomware-as-a-Service operation that collaborates with various affiliate groups to maximize their operational reach. Cl0p primarily gains initial access through exploitation of zero-day vulnerabilities in file transfer applications, phishing campaigns, and SQL injection attacks, employing double extortion tactics by exfiltrating sensitive data before deploying their custom ransomware payload, which uses strong encryption algorithms to render victim systems inoperable. The group has been responsible for several high-profile campaigns, most notably their exploitation of zero-day vulnerabilities in MOVEit Transfer software in 2023, which affected hundreds of organizations worldwide including major corporations and government entities, and their previous campaigns targeting Accellion FTA and other file transfer solutions that resulted in the compromise of sensitive data from numerous high-value targets. Cl0p remains active as of 2024, continuing to evolve their tactics and maintain their position as one of the most prolific ransomware groups globally, with over 1,490 documented victims primarily concentrated in the United States, Canada, United Kingdom, Germany, and Australia across technology, manufacturing, transportation, and consumer services sectors. The group has been linked to 1,490 public disclosures across our corpus. First observed on a leak site on March 13, 2020; most recent post February 14, 2026. The operation is currently active.

Also tracked as: Clop, TA505, FIN11.

Timeline of this disclosure

  • February 7, 2026MCKEEGROUP.NET listed by Cl0pon the group's public leak site

Sector and geography

Geographically, MCKEEGROUP.NET is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Cl0p means MCKEEGROUP.NET 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 Cl0p'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.

MCKEEGROUP.NET data breach — Cl0p ransomware leak (2026) · Darkfield