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D-klima

listed as d-klima.cz · Claimed by LockBit · listed 7 months ago

6m
Age
since listed · data leaked

Status timeline

  1. ListedDec 26, 2025
  2. Data leakeddate unknown

At a glance

Group
LockBit
Status
Data leaked
Country
Czech Republic
Listed on leak site
Dec 26, 2025

About the victim

AI dossier — public-source company profile

D-klima is a Czech family-owned company founded in 1991 that manufactures HVAC (heating, ventilation, and air-conditioning) components, including ducting, fittings, silencers, fans, and distribution elements. The company supplies products globally and offers wholesale pricing to installation firms. It emphasises quality materials, precision machinery, and rapid prototyping using 3D software.

Industry
HVAC Components Manufacturing
Founded
1991

Attack summary

Severity: high — Data has been confirmed as published by LockBit, indicating successful exfiltration. While the sector is not critical infrastructure and no regulated personal data at scale is explicitly confirmed, a data_published status from a prolific ransomware group represents significant confirmed data exposure warranting a high severity rating.

LockBit claims an attack on D-klima and has published data (disclosed status: data_published), indicating exfiltration of company data, though the specific volume and nature of the exfiltrated data are not detailed in the truncated post.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Company business data
  • Customer records
  • Operational/internal documents

What the group claims

D-klima is a company dealing in heating, ventilation and air-conditioning (HVAC) solutions, with a t...

Sources

Source

Indexed 7 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 LockBit

LockBit is a highly prolific ransomware group that emerged in October 2020 and has become one of the most active ransomware operations globally, with over 3,500 documented victims and a primary motivation of financial gain through extortion. The group is suspected to originate from Russia and operates as a Ransomware-as-a-Service (RaaS) model, recruiting affiliates to conduct attacks while providing them with ransomware tools, infrastructure, and support. LockBit primarily gains initial access through exploiting vulnerabilities in public-facing applications, credential stuffing attacks, and phishing campaigns, employing double extortion tactics where they steal sensitive data before encrypting systems and threatening to leak the information if ransom demands are not met. The group has demonstrated significant technical sophistication, developing multiple variants including LockBit 3.0 (also known as LockBit Black), and has been particularly active in targeting business services, manufacturing, technology, and healthcare sectors across the United States, France, Germany, United Kingdom, and Italy. Despite ongoing law enforcement efforts and international cooperation to disrupt their operations, including seizures of infrastructure and arrests of affiliates, LockBit has shown resilience and adaptability, continuing to operate and evolve their tactics while maintaining their position as one of the most dominant ransomware threats in the cybercriminal landscape. The group has been linked to 3,536 public disclosures across our corpus. First observed on a leak site on October 21, 2020; most recent post March 30, 2026. The operation is currently active.

Also tracked as: LockBit 3.0, LockBit Black, LockBit Green, ABCD ransomware.

Timeline of this disclosure

  • December 26, 2025d-klima.cz listed by LockBiton the group's public leak site

Other recent disclosures by LockBit

LockBit has been linked to 3,536 public victims on Darkfield. A sample of the most recent:

See the full LockBit dossier →

Sector and geography

Geographically, d-klima.cz is reported in Czech Republic, a country with 34 ransomware disclosures in our corpus.

If your organisation is affected

A listing by LockBit means d-klima.cz 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 LockBit'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.