Disclosure context

About clop

**Overview:** Clop is a prominent ransomware group that emerged in March 2020, operating primarily for financial gain through large-scale extortion campaigns targeting organizations across multiple sectors. The group has demonstrated sophisticated capabilities and persistence, becoming one of the most prolific ransomware operators with over 1,250 documented victims globally. **Origin & Affiliation:** Clop is believed to be linked to the TA505 cybercriminal group and has suspected ties to Russian-speaking threat actors, though they operate as an independent ransomware enterprise rather than a traditional RaaS model. The group has shown connections to other malware families and has been associated with the FIN11 financial crime group. **Attack Methodology:** Clop primarily gains initial access through exploitation of zero-day vulnerabilities in file transfer applications, most notably targeting MOVEit Transfer software in 2023, along with previous campaigns against Accellion FTA and other file transfer solutions. The group employs double extortion tactics, stealing sensitive data before encryption and threatening public disclosure on their leak site if ransom demands are not met, utilizing their own custom Clop ransomware variant that employs strong encryption algorithms. **Notable Campaigns:** The group's most significant campaign occurred in 2023 when they exploited a zero-day vulnerability in Progress Software's MOVEit Transfer application, affecting hundreds of organizations worldwide including major corporations, government agencies, and healthcare systems, making it one of the largest ransomware campaigns in history. This attack alone impacted millions of individuals whose personal data was compromised across multiple high-profile victims including major payroll processors and financial institutions. **Current Status:** Clop remains active as of 2024, continuing to conduct ransomware operations despite law enforcement efforts and increased scrutiny following their massive MOVEit campaign. The group has been linked to 1,254 public disclosures across our corpus. First observed on a leak site on March 13, 2020; most recent post May 1, 2026. The operation is currently active.

Also tracked as: Cl0p.

Timeline of this disclosure

February 14, 2026HUDSONSUSTAINABLE.COM listed by clopon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Energy sector, which has 374 disclosures indexed across all operators we track. Geographically, HUDSONSUSTAINABLE.COM is reported in United States, a country with 7,392 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

← All victims

Hudson Sustainable Group

listed as HUDSONSUSTAINABLE.COM · Claimed by clop · listed 3 months ago

Age

since listed · data leaked

Status timeline

Listed
Feb 14, 2026
Data leaked

At a glance

Group: clop
Status: Data leaked
Country: United States
Sector: Energy
Listed on leak site: Feb 14, 2026

About the victim

AI dossier — public-source company profile

Hudson Sustainable Group is a Miami-based sustainable energy investment and asset management firm founded in 2007 by Neil Z. Auerbach. The firm focuses on low carbon energy adoption at the intersection of technology, policy, and markets, having mobilized and deployed over $13 billion in capital across 25+ investments in 26 countries. It specializes in renewable energy finance, including solar, biogas, and electrification opportunities.

Industry: Sustainable Energy Investment & Asset Management
Address: Wells Fargo Center, 333 S.E. 2nd Avenue, Suite 2750, Miami, FL 33131
Employees: 11-50
Founded: 2007

Attack summary

Severity: high — Clop has a confirmed track record of exfiltrating significant business and financial data before publishing; the disclosed/data_published status indicates data has been released. As an asset management firm handling large-scale investment transactions and sensitive financial data across multiple countries, exposure of such records constitutes significant business data exfiltration, warranting a high severity rating.

Clop ransomware group has listed Hudson Sustainable Group under a disclosed/data_published status, claiming the data has been published on their leak platform. The leak post itself is a redirect queue page and provides no detail on the nature of data exfiltrated or whether encryption occurred.

high

Data the group says was taken

AI dossier — extracted from the leak post

Financial statements and projections
Investment records
Business strategy documents
Employee personal information
Client and partner communications
ESG and portfolio company data

Original description

AI-summarised, not from the leak post

"Hudson Sustainable Investments is a New York-based investment firm that focuses on sustainable investing. They aim to deliver superior risk-adjusted returns while promoting sustainable environmental practices and social responsibilities. The firm considers ecological, social, and governance issues while making investments, outlining a path to a resilient and sustainable global economy."

The leak post

captured from the group's site

You have been placed in a queue, awaiting forwarding to the platform. 
Please do not refresh the page, you will be automatically redirected.

Sources

Victim siteHUDSONSUSTAINABLE.COM
Leak posthttp://santat7kpllt6iyvqbr7q4amdv6dzrh6paatvyrzl7ry3zm72zigf4ad.onion/hudsonsustainable-com

Source

Indexed 3 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.