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 6, 2026Fabritius listed by thegentlemenon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Fabritius is reported in BE, a country with 28 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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Fabritius

Claimed by thegentlemen · listed 15 days ago

14d

Age

since listed · data leaked

Status timeline

Listed
May 6, 2026
Data leaked

At a glance

Group: thegentlemen
Status: Data leaked
Country: BE
Sector: Manufacturing
Listed on leak site: May 6, 2026

About the victim

AI dossier — public-source company profile

ETS Fabritius SPRL is a Belgian family-owned company based in Brussels, with origins dating to 1945 and formally operating since 1976. For over 50 years it has manufactured and sold temperature measurement equipment including thermocouples, resistance thermometers, converters, regulators, and connectors. The business has been passed through three generations of the Fabritius family.

Industry: Temperature Measurement Equipment Manufacturing
Address: Av. Van Volxem 180, B-1190 Bruxelles, Belgium
Founded: 1945

Attack summary

Severity: medium — Data has been published, confirming some level of exfiltration, but no details on data type, volume, or sensitivity (e.g. PII, financial, regulated data) are provided, preventing a higher classification.

The group 'thegentlemen' claims to have compromised ETS Fabritius SPRL and has published data (disclosed status: data_published), though no specific ransom demand or data size has been stated in the post.

medium

What the group claims

fabritius.be ETS Fabritius SPRL is a Belgian family-owned company founded in 1976, with roots going back to 1945. For over 50 years, it has manufactured and sold temperature measurement equipment — including thermocouples, resistance thermometers, converters, regulators, and connectors. The business has been passed down through three generations of the Fabritius family, combining deep product expertise with a commitment to quality and flexible customer service

Sources

Victim sitefabritius.be

Source

Indexed 15 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.