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 18, 2026E-Control Systems listed by thegentlemenon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 2,524 disclosures indexed across all operators we track. Geographically, E-Control Systems is reported in AT, a country with 5 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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E-Control Systems

Claimed by thegentlemen · listed 2 days ago

Age

since listed · data leaked

Status timeline

Listed
May 18, 2026
Data leaked

At a glance

Group: thegentlemen
Status: Data leaked
Country: AT
Sector: Technology
Listed on leak site: May 18, 2026

About the victim

AI dossier — public-source company profile

E-Control Systems (ECS) is a California-based technology company founded in 1998 and specializing in IoT-powered wireless temperature monitoring solutions. Their FusionLive™ platform provides real-time alerts, cloud-based dashboards, and regulatory compliance tools for food service, healthcare, life sciences, and retail industries. With over 5,000 installations nationwide, ECS delivers custom-engineered hardware and software for critical environment monitoring.

Industry: IoT Wireless Temperature Monitoring Systems
Address: California, USA (specific street address not stated)
Employees: 11-50
Founded: 1998

Attack summary

Severity: high — Data has been confirmed as published (data_published status). ECS serves healthcare, life sciences, and food safety sectors, meaning exfiltrated data likely includes regulated client information (HIPAA-adjacent, FDA compliance data). The breadth of critical-sector customers and 5,000+ installations raises the potential impact significantly.

The group 'thegentlemen' claims a data publication (disclosed status: data_published) against E-Control Systems, indicating exfiltration and publication of company data. No specific ransom amount or data size was stated, but the disclosure status confirms data has been released.

high

Data the group says was taken

AI dossier — extracted from the leak post

Company business data
Customer records (food service, healthcare, life sciences, retail sectors)
Operational and compliance data
Potentially regulated healthcare/life sciences client data

What the group claims

econtrolsystems.com zoominfo.com/c/e-control-systems-inc/34461104 E-Control Systems is a California-based technology leader founded in 1998, specializing in IoT-powered wireless temperature monitoring solutions for critical environments. Their turnkey FusionLive™ platform delivers real-time alerts, cloud-based dashboards, and regulatory compliance tools for food service, healthcare, life sciences, and retail industries. With 5,000+ installations nationwide, ECS combines custom-engineered hardware and intuitive software to safeguard products, ensure safety standards, and streamline operations 24/7

Sources

Victim siteecontrolsystems.com

Source

Indexed 2 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.