Disclosure context

About thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 424 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post May 18, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

May 6, 2026Millennium Partners listed by thegentlemenon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 516 disclosures indexed across all operators we track. Geographically, Millennium Partners is reported in US, a country with 2,713 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.

Ransomware victim disclosure

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Millennium Partners

Claimed by thegentlemen · listed 15 days ago

14d

Age

since listed · data leaked

Status timeline

Listed
May 6, 2026
Data leaked

At a glance

Group: thegentlemen
Status: Data leaked
Country: US
Sector: Financial Services
Listed on leak site: May 6, 2026

About the victim

AI dossier — public-source company profile

Millennium Partners is a premier luxury mixed-use real estate developer founded in 1991 and headquartered in New York City. The firm develops and owns landmark residential, hotel, office, and retail properties in major US gateway cities including New York, Boston, San Francisco, Los Angeles, Miami, Washington D.C., and Austin. Its portfolio exceeds $5 billion in value and includes 3,200+ luxury condominiums, 10 hotels, 2 million sq ft of office space, and pioneering branded residential partnerships with Ritz-Carlton and Four Seasons.

Industry: Luxury Real Estate Development
Address: 1995 Broadway, New York, NY 10023
Employees: 51-200
Founded: 1991

Attack summary

Severity: high — Data has been confirmed published by the threat actor against a high-value real estate firm managing a $5B+ portfolio, implying likely exfiltration of significant business, financial, and potentially personally identifiable data tied to high-net-worth clients and employees; however, specific regulated data types (e.g., medical, government) are not confirmed, stopping short of critical.

The group 'thegentlemen' claims to have attacked Millennium Partners and has published data (disclosed status: data_published), indicating exfiltration of company data, though the leak post does not specify the precise nature or volume of files exfiltrated.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company internal documents
Real estate development records
Partnership and contract data
Financial records
Employee records

What the group claims

millenniumptrs.com zoominfo.com/c/millennium-partners-inc/483051874 Millennium Partners is a premier luxury real estate developer founded in 1991 and headquartered in New York City, with over three decades of transforming urban neighborhoods through landmark mixed-use developments in gateway cities such as New York, Boston, San Francisco, and Washington D.C.. The company has pioneered the luxury branded residential experience by forging first-of-their-kind partnerships with Ritz-Carlton and Four Seasons, and today owns a portfolio worth over $5 billion encompassing 3,200+ condominiums, 10 hotels, 2 million sq ft of office space, and 1 million sq ft of retail. In 2023, Millennium Partners opened Winthrop Center in Boston — the world's largest Passive House office building — setting a new global benchmark for sustainability and human-centered design

Sources

Victim sitemillenniumptrs.com

Source

Indexed 15 days 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.