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Ransomware victim disclosure

All victims

MESAN USA

Claimed by GLOBAL SECRET · listed 3 days ago

184 GB (188,562 Files, 26,169 Folders)
Data size
188562 files records
3d
Age
since listed · listed for ransom

Status timeline

  1. ListedSep 10, 2026

Current state: Listed for ransom

At a glance

Status
Listed for ransom
Listed on leak site
Sep 10, 2026
Data size
184 GB (188,562 Files, 26,169 Folders)
Records
188562 files

About the victim

AI dossier — public-source company profile

MESAN USA is a Miami-based manufacturer and distributor of evaporative cooling equipment and air conditioning towers, serving North American markets. The company specializes in high-efficiency cooling solutions for large commercial and industrial applications, with ISO-9001 and CTI-STD-201 certifications. They claim to supply major projects including Guangzhou's International Finance Center.

Industry
Industrial Machinery & Equipment – Evaporative Cooling Towers
Address
Miami, Florida 33166, US
Employees
10-20

Attack summary

Severity: medium — Large-scale data exfiltration (184 GB) of a manufacturing company's files is significant, but the leak post does not confirm exposure of regulated data (PII, financial records, trade secrets explicitly named), and no encryption/operational disruption is claimed. Typical manufacturing data carries moderate sensitivity.

The GLOBAL SECRET group claims to have exfiltrated 184 GB of company data comprising 188,562 files and 26,169 folders from MESAN USA. The post does not specify what data categories were taken or whether operational systems were encrypted.

medium

Data the group says was taken

AI dossier — extracted from the leak post
  • Business files
  • Product designs and specifications
  • Customer/project records
  • Engineering and R&D documentation

What the group claims

MESAN USA is a manufacturer and distributor of evaporative cooling equipment and cooling towers, serving the Americas market. Notable projects include the Guangzhou International Finance Center (IFC Tower), one of the world's 10 tallest buildings, using MESAN cooling towers providing 12,700 tons of air conditioning. The company holds ISO-9001-2008 and CTI-STD-201 certifications.

The leak post

captured from the group's site
Country: Miami, Florida 33166, US | Website: mesanusa.com | Revenue: $5.4 Million | Industry: Industrial Machinery & Equipment, Manufacturing | Employees: 10-20 | Properties: 184 GB (188,562 Files, 26,169 Folders)
Guangzhous International Finance Center or IFC Tower, one of the worlds 10 tallest buildings, uses MESAN cooling towers A total of 12,700 tons of air conditioning, are reliably and dependably provided by MESAN towers, as a testimony to our excellence in quality, design and, manufacturing. Read More Small details make a big difference... Attention to detail, focus on perfection, refinement in the design of small components, to ensure reliability and long trouble-free service life, are at the core of MESANs business philosophy. We believe that The whole is greater than the sum of its parts Read More MESANs focus on engineering, research and development, quality management and excellent customer service, has been recognized by such important international organizations such as ISO, which awarded the ISO-9001-2008 certificate, and CTI, which issued the CTI-STD-201 performance certification. All these attributes make a powerful combination that drives the MESAN brand up, on a …

Data the group says was taken

  • files
  • folders

Screenshot of the leak post

Leak screenshot for MESAN USA

Sources

Source

Indexed 3 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.

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Disclosure context

About GLOBAL SECRET

GLOBAL SECRET is an active ransomware group with 19 confirmed victims as of August 2026. It operates a single onion leak site. The limited victim count suggests a relatively early or low-volume operation. The group has been linked to 41 public disclosures across our corpus. The operation is currently active.

Timeline of this disclosure

  • September 10, 2026MESAN USA listed by GLOBAL SECRET on the group's public leak site
Data size
184 GB (188,562 Files, 26,169 Folders)
Records
188562 files

Sector and geography

This disclosure adds to ransomware activity in the Industrial Machinery & Equipment, Manufacturing sector. Geographically, MESAN USA is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by GLOBAL SECRET means MESAN USA appeared on a ransomware extortion site and is being pressured to pay before any publication. 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.
  • Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
  • Monitor for the data appearing on GLOBAL SECRET'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.