Was SigmaControl hit by ransomware?

SigmaControl was listed by the thegentlemen ransomware operation (European Union), 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 thegentlemen ransomware group?

thegentlemen 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 SigmaControl breach?

thegentlemen published data attributed to SigmaControl. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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SigmaControl

Claimed by Thegentlemen · listed 7 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedJun 15, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: European Union
Sector: Technology
Listed on leak site: Jun 15, 2026

About the victim

AI dossier — public-source company profile

SigmaControl B.V. is a Dutch industrial automation specialist based in Barendrecht that serves as the exclusive Benelux distributor for Austrian automation brand SIGMATEK. The company provides integrated machine control systems, robotics, SCADA software, HMI solutions, and technical support to machine builders across the region.

Industry: Industrial Automation & Robotics
Address: Bijdorp West 24, 2992 LC Barendrecht, Netherlands

Attack summary

Severity: medium — Data published status confirmed, but no specific sensitive data categories (PII at scale, financial records, customer data) are explicitly enumerated in the leak post. Industrial automation company with moderate operational exposure; absence of proof inventory details limits confidence in exfiltration claim.

The group claims to have accessed SigmaControl's systems and published data. The specific scope of exfiltration (data types, volume) and operational impact are not detailed in the available leak post excerpt.

medium

Data the group says was taken

AI dossier — extracted from the leak post

company systems data
business records

What the group claims

***.eu zoominfo.com/c/sigmacontrol-bv/446626536 SigmaControl B.V. is a premier Dutch industrial automation specialist and the exclusive Benelux distributor for the Austrian automation brand SIGMATEK. Based in Barendrecht, they deliver fully integrated machine control systems, robotics, SCADA software, and expert technical support tailored specifically for machine builders. Their core mission is to optimize manufacturing processes by providing innovative, high-quality hardware and software solutions for complex motion-oriented applications

Sources

Victim sitesigmacontrol.eu

Source

Indexed 7 hours 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 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 504 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post June 15, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

June 15, 2026SigmaControl listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 504 public victims on Darkfield. A sample of the most recent:

See the full thegentlemen dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,544 disclosures indexed across all operators we track. Geographically, SigmaControl is reported in European Union.

If your organisation is affected

A listing by thegentlemen means SigmaControl 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.
Monitor for the data appearing on thegentlemen'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.