Was Heimbrock hit by ransomware?

Heimbrock was listed by the genesis 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 genesis ransomware group?

genesis 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 Heimbrock breach?

genesis published data attributed to Heimbrock. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

Heimbrock Inc.

listed as Heimbrock · Claimed by Genesis · listed 9 months ago

Age

since listed · data leaked

Status timeline

ListedOct 28, 2025
Data leakeddate unknown

At a glance

Group: Genesis
Status: Data leaked
Country: United States
Listed on leak site: Oct 28, 2025

About the victim

AI dossier — public-source company profile

Heimbrock Inc. is a national refractory contractor headquartered in Louisville, Kentucky, with over 125 years of experience providing total refractory, acid proofing, and industrial furnace and masonry services. The company operates as an engineer, contractor, and supplier, offering services including complete reline and rebuild, refractory repair, specialty linings and coatings, demolition, and industrial construction. It is a proud union contractor providing 24/7 emergency services.

Industry: Refractory & Industrial Masonry Contracting
Address: 4632 Illinois Avenue, Louisville, KY 40213

Attack summary

Severity: medium — Data is listed as published, indicating confirmed exfiltration, but no specific sensitive regulated data (PII at scale, medical, financial) is described and the scale of the breach is unknown for this relatively small industrial contractor.

The Genesis ransomware group claims to have published data belonging to Heimbrock Inc. as part of a multi-victim leak post; the post indicates data has been disclosed (data_published status) though specific details on encryption or volume of exfiltrated data are not stated in the excerpt.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company business data

What the group claims

Heimbrock Inc. is a national refractory contractor.

The leak post

captured from the group's site

A global leader in the provision of Marine Claims TPA and Recovery services.
## Ben F. Barcus and associates pllc
A law firm from Tacoma, WA.
[Ben F. Barcus and associates pllc](http://genesis6ixpb5mcy4kudybtw5op2wqlrkocfogbnenz3c647ibqixiad.onion/72daf8151f038f9399f8/)
Conducting training sessions, engaging with stakeholders, and organizing meetings and events.
A civil engineering and surveying firm located at 570 Congress Park Dr, Dayton, Ohio.
A legal firm dedicated to safeguard the rights of its clients
## The American Board of Preventive Medicine
[The American Board of Preventive Medicine](http://genesis6ixpb5mcy4kudybtw5op2wqlrkocfogbnenz3c647ibqixiad.onion/5fbef11c89ddb34c6e90/)
## Integrated Process Engineers & Constructors.
Specializes in custom modular process systems, offering a wide range of products including bioreactors, filtration systems, and utility stations.
[Integrated Process Engineers & Constructors.](http://genesis6ixpb5mcy4kudybtw5op2wqlrkocfogbnenz3c647ibqixiad.onion/6ada59560a7932d5b3df/)
## Fargo Moorhead West Fargo Chamber
[Fargo Moorhead West Fargo Chamber](http://genesis6ixpb5mcy4kudybtw5op2wqlrkocfogbnenz3c647ibqixiad.onion/824f0a1581059760e9d3/)
CareP…

Sources

Victim siteheimbrock.com
Leak posthttp://genesis6ixpb5mcy4kudybtw5op2wqlrkocfogbnenz3c647ibqixiad.onion/feb6c5c0b2acddc96ed8/

Source

Indexed 9 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.

Is this your supplier? Your competitor? You?

Pro plans monitor your domain, corporate emails, and crypto wallets across every new ransomware leak-site post, breach dump and Telegram callout — alerts within 5 minutes.

Disclosure context

About genesis

Genesis is a recently emerged ransomware group that was first observed in October 2025, operating with apparent financial motivations based on their targeting patterns across multiple high-value sectors. The group has demonstrated a relatively aggressive operational tempo since emergence, accumulating 54 documented victims within a short timeframe. Given the limited public documentation available from established threat intelligence sources regarding this newly identified group, specific details about their country of origin, organizational structure, and precise attack methodologies remain under investigation by security researchers. The group's targeting patterns indicate a preference for victims in the United States and United Kingdom, with additional activity observed in Malaysia and Spain, suggesting either a broad operational scope or the use of automated targeting tools that do not discriminate by geography. Their sector targeting reveals a focus on healthcare, manufacturing, business services, and financial services organizations, indicating they may prioritize entities with both high revenue potential and critical operational dependencies that increase pressure for ransom payment. Due to the group's recent emergence and limited reporting from major threat intelligence organizations such as Mandiant, CISA, or FBI, comprehensive details regarding their specific encryption methods, initial access vectors, data exfiltration practices, or notable high-profile campaigns have not yet been publicly documented. Genesis remains an active threat as of current reporting, though their operational longevity and potential connections to established ransomware ecosystems continue to be assessed by the cybersecurity community. The group has been linked to 107 public disclosures across our corpus. First observed on a leak site on October 21, 2025; most recent post July 5, 2026. The operation is currently active.

Timeline of this disclosure

October 28, 2025Heimbrock listed by genesison the group's public leak site

Other recent disclosures by genesis

genesis has been linked to 107 public victims on Darkfield. A sample of the most recent:

See the full genesis dossier →

Sector and geography

Geographically, Heimbrock is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by genesis means Heimbrock 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 genesis'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.