Was MESSER CUTTING SYSTEMS hit by ransomware?

MESSER CUTTING SYSTEMS was listed by the Royal ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Royal ransomware group?

Royal is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the MESSER CUTTING SYSTEMS breach?

Royal published data attributed to MESSER CUTTING SYSTEMS (~600 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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MESSER CUTTING SYSTEMS

Claimed by Royal · listed 3 years ago

600 GB

Data size

41m

Age

since listed · data leaked

Status timeline

ListedFeb 2, 2023
Data leakeddate unknown

At a glance

Group: Royal
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Feb 2, 2023
Data size: 600 GB

About the victim

AI dossier — public-source company profile

Messer Cutting Systems is a global supplier of cutting solutions for the metal-working industry, specializing in plasma, laser, and thermal cutting technologies along with intelligent software solutions. The company operates from five main locations and serves customers in more than 50 countries, with its US headquarters in Menomonee Falls, Wisconsin. It employs nearly 1,000 people worldwide.

Industry: Industrial Cutting Systems & Metal-Working Equipment
Address: W141 N9427 Fountain Blvd., Menomonee Falls, WI 53051, USA
Employees: ~1000

Attack summary

Severity: critical — 600 GB of confirmed exfiltrated and published data includes PII at scale (employee, client, and dealer databases), sensitive HR and financial records, and named executive/staff mailboxes. Data has been fully published with an archive password, constituting a critical regulated-data exposure event.

The Royal ransomware group claims to have exfiltrated 600 GB of data from Messer Cutting Systems' network, including personal/HR/finance/project files, 37 GB of named employee mailboxes, and 10 GB of SQL databases containing employee, client, and dealer records. The group has published the data along with an archive password, indicating full disclosure.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Personal data
HR records
Financial records
Project files
Employee mailboxes (37 GB)
SQL databases (10 GB)
Employee records (name, address, phone, email)
Client records (name, address, phone, email)
Dealer records (name, address, phone, email)

What the group claims

Messer Cutting Systems is a global supplier of cutting solutions for the metal-working industry. We have stolen from their network 600 GB in total, including:1) personal data, HR, Finance, Projects etc.;2) Mailboxes - 37 GBMary Svitak - AccountingDebbie Richter - Accounting Manager / ControllerLinda Sierszynski - HR ManagerJulie Wolf - AccountingMark Ringgenberg - Director Global Product PortfolioBeth Rouse - Accounting;3) SQL Databases - 10 GBEmployee/client/dealers DB (Name, address, phone number, mail address etc.)Feel free to check!Archive password: gEs1S!g#hH

Sources

Victim siteus.messer-cutting.com

Source

Indexed 3 years 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 Royal

Royal is a financially motivated ransomware group that emerged in November 2022, quickly establishing itself as a significant threat with over 200 documented victims across multiple sectors. The group is believed to operate independently rather than as a ransomware-as-a-service model, though their exact country of origin remains unclear based on publicly available intelligence. Royal primarily gains initial access through phishing campaigns and exploitation of remote desktop protocols, subsequently deploying custom ransomware that encrypts victim files while exfiltrating sensitive data for double extortion tactics. The group has demonstrated a preference for targeting critical infrastructure and public services, with notable attacks against educational institutions, healthcare facilities, and government entities primarily in the United States, though they have also significantly impacted organizations across Germany, the United Kingdom, Canada, and France. Their encryption methodology involves custom-built malware that systematically encrypts files while maintaining persistence on compromised networks. As of recent reporting from federal agencies including CISA and FBI advisories, Royal remains an active threat with ongoing campaigns targeting organizations across their preferred sectors, particularly focusing on entities with limited cybersecurity resources that may be more likely to pay ransom demands. The group has been linked to 211 public disclosures across our corpus. First observed on a leak site on November 4, 2022; most recent post July 19, 2023. The operation is currently inactive.

Timeline of this disclosure

February 2, 2023MESSER CUTTING SYSTEMS listed by Royalon the group's public leak site

Data size: 600 GB

Other recent disclosures by Royal

Royal has been linked to 211 public victims on Darkfield. A sample of the most recent:

See the full Royal dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,681 disclosures indexed across all operators we track. Geographically, MESSER CUTTING SYSTEMS is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Royal means MESSER CUTTING SYSTEMS appeared on a ransomware extortion site and data attributed to it has been published. 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 Royal'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.