Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
MO
Ransomware Victim Business Services

MONTERO & SEGURA

Ransomware attack by Madliberator · Disclosed July 17, 2024 · 🇪🇸 Spain

msprocuradores.es

Date Disclosed
Jul 17, 2024
2024
Threat Group
Madliberator
16 total victims
Country
🇪🇸 Spain
Industry
Business Services

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Madliberator. Figures and technique mappings are quoted from the source data, not inferred.

About the Madliberator group

MadLiberator is a ransomware group that emerged in mid-2024, known for erratic behavior including randomized ransom demands and unpredictable encryption patterns, targeting government entities including the Italian Ministry of Culture and using a data leak site to post exfiltrated files. Madliberator has listed 16 victims since May 2024.

Incident Analysis

MONTERO & SEGURA was targeted by Madliberator ransomware, one of the most active ransomware groups in our database with 16 confirmed victims globally. The attack was disclosed on July 17, 2024, when MONTERO & SEGURA appeared on the group's dark web leak site.

MONTERO & SEGURA is based in Spain , operating in the Business Services sector. Spain ranks #9 globally for ransomware attacks, with 425 victims in our database.

Sector context: Business services firms often have access to multiple client environments, making them high-value pivot points for ransomware operators seeking to maximise impact across multiple victim organisations.

Madliberator typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 7, 2026 06:00 UTC.

Frequently Asked Questions

Was MONTERO & SEGURA attacked by ransomware?

Yes. MONTERO & SEGURA was listed as a victim of the Madliberator ransomware group on July 17, 2024. The organisation is based in Spain and operates in the Business Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked MONTERO & SEGURA?

MONTERO & SEGURA was attacked by Madliberator ransomware. Madliberator is one of the most active ransomware groups, having claimed 16 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the MONTERO & SEGURA ransomware attack occur?

The ransomware attack on MONTERO & SEGURA was disclosed on July 17, 2024. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the MONTERO & SEGURA ransomware attack?

The specific data stolen from MONTERO & SEGURA has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Business Services organisation, MONTERO & SEGURA likely held sensitive business data, client information, and operational records.

How can organisations protect against Madliberator attacks?

To defend against Madliberator and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.