Was MONTERO & SEGURA hit by ransomware?

MONTERO & SEGURA was listed by the Madliberator ransomware operation (Spain), 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 Madliberator ransomware group?

Madliberator 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 MONTERO & SEGURA breach?

Madliberator published data attributed to MONTERO & SEGURA. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Segura Procuradores SLP

listed as MONTERO & SEGURA · Claimed by Madliberator · listed 2 years ago

24m

Age

since listed · data leaked

Status timeline

ListedJul 17, 2024
Data leakeddate unknown

At a glance

Group: Madliberator
Status: Data leaked
Country: Spain
Listed on leak site: Jul 17, 2024

About the victim

AI dossier — public-source company profile

Segura Procuradores SLP is a professional law firm specializing in court representation (procuraduría) at the national level in Spain, with offices in Barcelona and Madrid. The firm serves major banks, financial institutions, public bodies, and other corporate clients.

Industry: Legal Services & Court Representation
Address: Barcelona, Spain (headquarters); offices also in Madrid

Attack summary

Severity: high — A law firm handling sensitive legal and financial matters for banks and public bodies. Exfiltration of case files and client information poses significant regulatory, competitive, and privacy risks, even without explicit proof inventory listed.

The Madliberator group claims to have exfiltrated data from Segura Procuradores. The post does not explicitly specify what data was stolen or whether encryption occurred, but the disclosure of the company name and brief operational details suggests data publication.

high

Data the group says was taken

AI dossier — extracted from the leak post

Client information
Bank/financial institution records
Legal case files
Corporate client data

What the group claims

Segura Procuradores SLP es una sociedad profesional, dedicada al ejercicio de la procura a nivel nacional, con despachos abiertos en Barcelona, Madrid. Su sede central, en Barcelona, está ubicada en el enclave judicial construido al efecto, lo cual nos permite ofrecer una rápida respuesta a nuestros clientes y abogados, hasta el último minuto de cierre de los juzgados.Cuenta entre sus clientes con importantes Bancos, Establecimientos Financieros de Crédito, Organismos Públicos y empresas ....

Sources

Victim sitemsprocuradores.es
Leak posthttp://k67ivvik3dikqi4gy4ua7xa6idijl4si7k5ad5lotbaeirfcsx4sgbid.onion/msprocuradores.es

Source

Indexed 2 years 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 Madliberator

Madliberator is a recently emerged ransomware group first observed in July 2024, operating with apparent financial motivations and demonstrating a focused targeting approach across multiple continents. Based on their targeting pattern spanning Spain, Italy, Germany, South Korea, and South Africa, the group appears to operate internationally with no clear geographic origin established by security researchers, and their operational model as either independent operators or ransomware-as-a-service remains undetermined due to limited public documentation. With only 16 documented victims since their emergence, specific details about their attack methodology, initial access vectors, encryption techniques, and whether they employ double or triple extortion tactics have not been extensively documented by major security firms or government agencies. The group has primarily targeted business services, manufacturing, financial services, and government sectors, though no specific high-profile incidents or record ransom demands have been publicly reported by CISA, FBI, or established threat intelligence providers. As of current reporting, Madliberator appears to remain active given their recent emergence and ongoing targeting activities, though comprehensive analysis remains limited due to the group's relatively small victim count and recent operational timeline. The group has been linked to 16 public disclosures across our corpus. First observed on a leak site on July 17, 2024; most recent post October 1, 2024. The operation is currently inactive.

Also tracked as: mad liberator.

Timeline of this disclosure

July 17, 2024MONTERO & SEGURA listed by Madliberatoron the group's public leak site

Other recent disclosures by Madliberator

Madliberator has been linked to 16 public victims on Darkfield. A sample of the most recent:

See the full Madliberator dossier →

Sector and geography

Geographically, MONTERO & SEGURA is reported in Spain, a country with 351 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Madliberator means MONTERO & SEGURA 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, INCIBE-CERT (Spain), as required for your jurisdiction.
Monitor for the data appearing on Madliberator'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.