Ransomware victim disclosure

Pyramid Management Group

listed as Pyramid · Claimed by nitrogen · listed 7 hours ago

Today

Age

since listed · data leaked

Status timeline

Listed
Jun 3, 2026
Data leaked

At a glance

Group: nitrogen
Status: Data leaked
Country: US
Sector: Not Found
Listed on leak site: Jun 3, 2026

About the victim

AI dossier — public-source company profile

Pyramid Management Group is a real estate development and management company founded in 1970 by Robert J. Congel. It owns and operates shopping centers across the northeastern United States, managing approximately 12 million square feet of gross leasable area and generating $4 billion in annual sales across properties in New York and Massachusetts.

Industry: Real Estate & Shopping Center Management
Founded: 1970

Attack summary

Severity: medium — Data published status confirmed, but no proof files/screenshots are advertised in the excerpt. The company manages significant commercial real estate portfolios with tenant and customer data; exfiltration of this scale warrants medium severity pending visibility of actual proof and data sensitivity.

The nitrogen group claims to have exfiltrated data from Pyramid Management Group. The specific data categories and scope are not detailed in the leak post excerpt provided.

medium

Data the group says was taken

AI dossier — extracted from the leak post

business records
operational data
tenant/lessee information

What the group claims

Ownership and management of shopping center. Development and redevelopment of real estate properties. Leasing of space to retail chains, restaurants, and entertainment venues

Sources

Victim sitewww.pyramidmg.com
Leak posthttp://nitrogenczslprh3xyw6lh5xyjvmsz7ciljoqxxknd7uymkfetfhgvqd.onion/posts/6a204a68c8b4a55a5d8de666

Source

Indexed 7 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 nitrogen

**Nitrogen** is an emerging ransomware group that first appeared in September 2024, operating with apparent financial motivations through targeted extortion campaigns primarily focused on North American and European organizations. The group has claimed responsibility for attacks against 46 documented victims across multiple sectors, with manufacturing companies representing their most frequent targets. Limited public information suggests the group operates independently rather than as a Ransomware-as-a-Service model, though their specific country of origin and potential affiliations with other cybercriminal organizations remain undetermined by major security research firms. Their attack methodology appears to focus on opportunistic targeting across diverse industries including manufacturing, business services, technology, and hospitality sectors, with the United States serving as their primary area of operations followed by significant activity in Canada, Portugal, India, and France. Due to the group's recent emergence and relatively low profile compared to established ransomware families, detailed technical analysis of their encryption methods, data exfiltration practices, and initial access vectors has not been extensively documented by major threat intelligence providers such as CISA, FBI, or Mandiant. Given the group's recent formation in September 2024, no major high-profile campaigns or significant law enforcement actions have been publicly reported, with their victim portfolio consisting primarily of small to medium-sized enterprises rather than critical infrastructure or Fortune 500 companies. Nitrogen appears to remain active as of current reporting, though their limited operational history and relatively small victim count suggest they are still establishing their presence within the broader ransomware ecosystem. The group has been linked to 57 public disclosures across our corpus. First observed on a leak site on September 30, 2024; most recent post June 3, 2026. The operation is currently active.

Timeline of this disclosure

June 3, 2026Pyramid listed by nitrogenon the group's public leak site

Other recent disclosures by nitrogen

nitrogen has been linked to 57 public victims on Darkfield. A sample of the most recent:

FOXCONNManufacturing · TW · May 11, 2026

See the full nitrogen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, Pyramid is reported in US, a country with 2,714 ransomware disclosures in our corpus.

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.