Was Comdat Datasystems hit by ransomware?

Comdat Datasystems was listed by the thegentlemen ransomware operation (Germany), 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 Comdat Datasystems breach?

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

Ransomware victim disclosure

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Comdat Datasystems

Claimed by Thegentlemen · listed 4 months ago

Age

since listed · data leaked

Status timeline

ListedFeb 15, 2026
Data leakeddate unknown

At a glance

Group: Thegentlemen
Status: Data leaked
Country: Germany
Listed on leak site: Feb 15, 2026

About the victim

AI dossier — public-source company profile

Comdat Datasystems AG is a leading Swiss ICT infrastructure integrator offering end-to-end solutions in server, storage, virtualisation, communication, workplace, and printing. The company plans, implements, and manages complete infrastructure solutions for businesses across Switzerland, with offices in Dietlikon and Rotkreuz. It operates as part of the COMDAT/SMARTEC group and reports annual revenue exceeding CHF 50 million with over 100 employees across five locations.

Industry: ICT Infrastructure Integration & Managed Services
Address: Industriestrasse 24, 8305 Dietlikon, Switzerland
Employees: 51-200

Attack summary

Severity: high — Data is marked as published (data_published) by the threat actor, indicating confirmed exfiltration. As an ICT managed services provider serving enterprise and government clients (including Swiss Parliamentary Services and biopharma firms), a breach could expose sensitive client infrastructure data and business records at significant scale.

The ransomware group 'thegentlemen' claims to have attacked Comdat Datasystems AG and the disclosure status is listed as data_published, suggesting data exfiltration has occurred; however, the leak post content is inaccessible due to a browser verification challenge, preventing direct confirmation of specific claims or data types.

high

Data the group says was taken

AI dossier — extracted from the leak post

Business infrastructure data
Client records
Internal corporate documents

What the group claims

comdat.ch zoominfo.com/c/comdat-datasystems-ag/431402828 COMDAT DATASYSTEMS AG is a leading provider of comprehensive ICT infrastructure solutions for businesses in Switzerland. They plan, implement, and manage total infrastructure solutions in areas such as servers, storage, virtualization, communication, collaboration, workplace, and printing. The company also focuses on products and services in communication technology and continuously expands its managed services portfolio

The leak post

captured from the group's site

Gentlecloud Protection 🛡️ Gentlecloud Verifying your browser... Initializing security checks... I'm not a bot

Sources

Victim sitecomdat.ch
Leak posthttp://tezwsse5czllksjb7cwp65rvnk4oobmzti2znn42i43bjdfd2prqqkad.onion

Source

Indexed 4 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

February 15, 2026Comdat Datasystems 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

Geographically, Comdat Datasystems is reported in Germany, a country with 695 ransomware disclosures in our corpus.

If your organisation is affected

A listing by thegentlemen means Comdat Datasystems 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.