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Altius Geotecnia y Obras Especiales

Claimed by Qilin · listed 5 months ago

4m
Age
since listed · data leaked

Status timeline

  1. ListedJan 20, 2026
  2. Data leakeddate unknown

At a glance

Group
Qilin
Status
Data leaked
Country
Spain
Sector
Construction
Listed on leak site
Jan 20, 2026

About the victim

AI dossier — public-source company profile

Altius Geotecnia y Obras Especiales is a Spanish company with over 20 years of experience specialising in geotechnical solutions and civil/public works construction. Their services include dam and reservoir works, slope stabilisation, ground improvement, special foundations, structural repair, and monitoring. They serve both public and private sector clients across transport and hydraulic infrastructure projects.

Industry
Geotechnical Engineering & Specialist Civil Works

Attack summary

Severity: high — Data has been published (data_published status confirmed), indicating confirmed exfiltration and release of company data. The company works on public infrastructure projects (transport, hydraulic, dams), meaning leaked data could include sensitive engineering, contractual, or project documentation. Absence of stated data size or inventory limits escalation to critical.

The Qilin ransomware group has listed Altius Geotecnia y Obras Especiales as a victim with a disclosed status of data_published, indicating that data has been exfiltrated and published. No ransom amount or specific data volume was stated in the post.

high

What the group claims

N/A

The leak post

captured from the group's site
Law Firms & Legal Services 
[John G Yphantides A Professional Law](http://ijzn3sicrcy7guixkzjkib4ukbiilwc3xhnmby4mcbccnsd7j2rekvqd.onion/site/blog?uuid=1e464ce5-6e74-4e62-be0b-eac503e43af8)
Law Firms & Legal Services 
Law Firms & Legal Services 
[Keller Williams Real Estate - Exton](http://ijzn3sicrcy7guixkzjkib4ukbiilwc3xhnmby4mcbccnsd7j2rekvqd.onion/site/blog?uuid=ac8e3226-6965-4f8e-a2d5-53a0dbce8535)

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 Qilin

Qilin is a ransomware group that emerged in October 2022, operating with primarily financial motivations through targeted attacks against organizations across multiple sectors. The group appears to operate independently with limited public information available regarding their specific country of origin or affiliations to other ransomware families. Qilin employs double extortion tactics, typically exfiltrating sensitive data before deploying their encryption payload, though specific details about their initial access vectors and technical tools remain less documented in public security research. The group has demonstrated a broad targeting approach, with their 1645 known victims spanning multiple countries including the United States, France, Canada, United Kingdom, and Germany, with particular focus on manufacturing, technology, healthcare, and business services sectors. Based on available intelligence reporting, Qilin remains an active threat as of recent assessments, continuing their ransomware operations without significant reported law enforcement disruption. The group has been linked to 1,935 public disclosures across our corpus. First observed on a leak site on October 8, 2022; most recent post June 12, 2026. The operation is currently active.

Timeline of this disclosure

  • January 20, 2026Altius Geotecnia y Obras Especiales listed by Qilinon the group's public leak site

Other recent disclosures by Qilin

Qilin has been linked to 1,935 public victims on Darkfield. A sample of the most recent:

See the full Qilin dossier →

Sector and geography

This disclosure adds to ransomware activity in the Construction sector, which has 415 disclosures indexed across all operators we track. Geographically, Altius Geotecnia y Obras Especiales is reported in Spain, a country with 212 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Qilin means Altius Geotecnia y Obras Especiales 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 Qilin'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.

Altius Geotecnia y Obras Especiales data breach — Qilin ransomware leak (2026) · Darkfield