Was heimhaus.de hit by ransomware?

heimhaus.de was listed by the kawa4096 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 kawa4096 ransomware group?

kawa4096 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 heimhaus.de breach?

kawa4096 published data attributed to heimhaus.de. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

← All victims

HEIM & HAUS

listed as heimhaus.de · Claimed by Kawa4096 · listed 1 year ago

12m

Age

since listed · data leaked

Status timeline

ListedJul 7, 2025
Data leakeddate unknown

At a glance

Group: Kawa4096
Status: Data leaked
Country: Germany
Listed on leak site: Jul 7, 2025

About the victim

AI dossier — public-source company profile

HEIM & HAUS is a German manufacturer of exclusive building components including roller shutters, awnings, roof windows, doors, and terrace roofs. Founded over 55 years ago, the company operates direct sales channels and maintains a network of installation partners across Germany, serving approximately 1.4 million satisfied customers.

Industry: Building Components & Architectural Hardware Manufacturing

Attack summary

Severity: medium — Data published with no proof files visible in the truncated post; no specific sensitive data categories confirmed; operational impact unknown. Classified as medium due to confirmed disclosure status and potential business data exposure.

The kawa4096 group claims to have attacked HEIM & HAUS and published data from the victim. No specific details on exfiltration versus encryption-only, or data categories, are disclosed in the leak post.

medium

What the group claims

www.heimhaus.de

Sources

Victim siteheimhaus.de

Source

Indexed 1 year 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 kawa4096

kawa4096 is a recently emerged ransomware group first observed in June 2025, operating with apparent financial motivations based on their targeting patterns across multiple high-value sectors. The group has been documented attacking victims primarily in the United States, Japan, and Germany, with a focus on healthcare, financial services, and public sector organizations, suggesting a strategic approach to maximize potential ransom payments. With 17 known victims identified since their emergence, kawa4096 appears to be a relatively small but active operation, though limited public documentation from major security firms and law enforcement agencies means specific details about their attack methodology, infrastructure, and organizational structure remain largely unknown. The group's targeting of critical sectors including healthcare and government entities indicates they may employ double extortion tactics common among modern ransomware operators, though their specific technical capabilities and initial access methods have not been publicly detailed by established threat intelligence sources. Given the recent timeline of their observed activity beginning in mid-2025, kawa4096 appears to be currently active, though the limited intelligence available suggests they may be either a new independent operation or a smaller affiliate group that has not yet attracted significant law enforcement attention or detailed analysis from major cybersecurity researchers. The group has been linked to 17 public disclosures across our corpus. First observed on a leak site on June 27, 2025; most recent post July 29, 2025. The operation is currently inactive.

Timeline of this disclosure

July 7, 2025heimhaus.de listed by kawa4096on the group's public leak site

Other recent disclosures by kawa4096

kawa4096 has been linked to 17 public victims on Darkfield. A sample of the most recent:

See the full kawa4096 dossier →

Sector and geography

Geographically, heimhaus.de is reported in Germany, a country with 926 ransomware disclosures in our corpus.

If your organisation is affected

A listing by kawa4096 means heimhaus.de 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, CERT-Bund (Germany), as required for your jurisdiction.
Monitor for the data appearing on kawa4096'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.