Was Anderlues hit by ransomware?

Anderlues was listed by the thegentlemen ransomware operation (Belgium), 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 Anderlues breach?

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

Ransomware victim disclosure

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Municipality of Anderlues

listed as Anderlues · Claimed by Thegentlemen · listed 2 months ago

54d

Age

since listed · data leaked

Status timeline

ListedApr 19, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Belgium
Sector: Manufacturing
Listed on leak site: Apr 19, 2026

About the victim

AI dossier — public-source company profile

Anderlues is a small Belgian municipality of approximately 12,000 residents located in the province of Hainaut, Wallonia, covering an area of 17 km². Its official website serves as the primary digital portal for local government services including an online e-counter (E-Guichet) for official documents, cultural events, and public infrastructure. The municipality provides social assistance, energy subsidies, recycling services, and community programmes through its centre 'La Bourlette'.

Industry: Local Government & Municipal Services
Address: Anderlues, Province of Hainaut, Wallonia, Belgium

Attack summary

Severity: high — The victim is a local government entity with confirmed data publication status. Municipal systems typically hold regulated PII of thousands of residents (identity documents, social assistance, subsidy records), making published exfiltration of such data a high-severity incident affecting a population of ~12,000.

The group 'thegentlemen' claims to have attacked the Municipality of Anderlues and has published data (disclosed status: data_published), though no specific ransom demand or data size has been stated in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Resident personal records
Official government documents
E-counter (E-Guichet) submissions
Local council administrative data
Social assistance records
Energy subsidy records

What the group claims

Anderlues.be is the official website of the municipality of Anderlues, a small town in the province of Hainaut, Wallonia, Belgium, with a population of approximately 12,000 residents and an area of 17 km². The site serves as the main digital portal for local government services, including an e-counter (E-Guichet) for requesting official documents online, news and announcements, cultural events, and public infrastructure services. The municipality is governed by a local council and offers residents services such as recycling centres, social assistance, energy subsidies, and cultural programmes through its community centre "La Bourlette"

Sources

Victim siteanderlues.be

Source

Indexed 2 months 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 483 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post June 11, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

April 19, 2026Anderlues listed by thegentlemenon the group's public leak site

Other recent disclosures by thegentlemen

thegentlemen has been linked to 483 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 Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Anderlues is reported in Belgium, a country with 28 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Anderlues 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.