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Dinnebier Gruppe

listed as Dinnebiergruppe.de · Claimed by Cloak · listed 5 months ago

4m
Age
since listed · data leaked

Status timeline

  1. ListedFeb 19, 2026
  2. Data leakeddate unknown

At a glance

Group
Cloak
Status
Data leaked
Country
Germany
Listed on leak site
Feb 19, 2026

About the victim

AI dossier — public-source company profile

Dinnebier Gruppe is a German multi-brand automotive dealer group headquartered in Berlin, operating multiple locations across Berlin and Brandenburg. The group sells and finances new and used vehicles across brands including Mercedes-Benz, Audi, Porsche, Volkswagen, Ford, Suzuki, Kia, and Land Rover, and provides workshop, leasing, insurance, and fleet services. According to the group's leak post, the company also has interests in real estate management, hotel operations, and petrol stations.

Industry
Automotive Dealership & Vehicle Services
Address
Holzhauser Str. 10-12, 13509 Berlin, Germany (primary listed location; multiple branch addresses across Berlin and Brandenburg)

Attack summary

Severity: high — Data has been published by the threat actor, indicating confirmed exfiltration. As a multi-location automotive dealer group, the company likely holds significant volumes of customer PII, financing/credit data, and commercial client records, making the exposure materially significant even without a stated data size.

The Cloak ransomware group claims to have attacked Dinnebiergruppe.de and has published data (disclosed status: data_published), though no specific data volume or ransom demand was stated in the post.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Customer records
  • Vehicle sales and financing data
  • Leasing and insurance documents
  • Fleet and commercial client data
  • Internal business documents
  • Potentially real estate and hotel operational records

Original description

AI-summarised, not from the leak post

"Dinnebiergruppe.de" is a German company incorporated into the automobile industry. They are authorized dealers for major car brands including Mercedes-Benz, smart, Audi, Porsche, and Volkswagen Commercial Vehicles. The company offers a broad range of services including car sales, leasing, financing, insurance, and extensive car maintenance. Moreover, they are also involved in real estate management, hotel industry, and operate petrol stations.

Sources

Source

Indexed 5 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 Cloak

Cloak is a relatively new ransomware group that emerged in August 2023, operating with primarily financial motivations and demonstrating a broad international targeting scope with 162 documented victims across multiple sectors. The group's origin and specific affiliations remain undocumented in public threat intelligence reporting, though their operational patterns suggest they may operate independently rather than as part of a larger ransomware-as-a-service ecosystem. Limited public documentation exists regarding their specific attack methodologies, encryption techniques, or data exfiltration practices, though their targeting patterns indicate sophisticated capabilities to compromise organizations across diverse sectors including business services, technology, healthcare, and manufacturing. The group has demonstrated a preference for targeting victims in English-speaking countries and Western Europe, with the United States, Germany, United Kingdom, Canada, and Italy representing their primary geographic focus areas. Cloak appears to remain active as of current reporting, though the relative scarcity of detailed public analysis from major threat intelligence firms suggests either operational security effectiveness or a lower profile compared to more established ransomware operations. The group has been linked to 166 public disclosures across our corpus. First observed on a leak site on August 24, 2023; most recent post June 18, 2026. The operation is currently active.

Timeline of this disclosure

  • February 19, 2026Dinnebiergruppe.de listed by Cloakon the group's public leak site

Other recent disclosures by Cloak

Cloak has been linked to 166 public victims on Darkfield. A sample of the most recent:

See the full Cloak dossier →

Sector and geography

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

If your organisation is affected

A listing by Cloak means Dinnebiergruppe.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 Cloak'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.