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Ransomware Victim Business Services

Seidor

Ransomware attack by Timc · Disclosed April 9, 2026 · 🇪🇸 Spain

www.seidor.com

Date Disclosed
Apr 9, 2026
2026
Threat Group
Timc
3 total victims
Country
🇪🇸 Spain
Industry
Business Services

ThreatAI Analysis

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

About the Timc group

TiMc is a ransomware group that emerged in early 2026, claiming high-impact attacks against Spanish IT services leader Seidor (1 TB+ data) and oncology organization Oncologica (100 GB+), targeting Business Services, Healthcare, and IT sectors with a focus on Spanish-speaking and European targets. Timc has listed 3 victims since April 2026.

Incident Analysis

Seidor was targeted by Timc ransomware, one of the most active ransomware groups in our database with 3 confirmed victims globally. The attack was disclosed on April 9, 2026, when Seidor appeared on the group's dark web leak site.

Seidor 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.

Timc 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 6, 2026 14:00 UTC.

Frequently Asked Questions

Was Seidor attacked by ransomware?

Yes. Seidor was listed as a victim of the Timc ransomware group on April 9, 2026. 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 Seidor?

Seidor was attacked by Timc ransomware. Timc is one of the most active ransomware groups, having claimed 3 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Seidor ransomware attack occur?

The ransomware attack on Seidor was disclosed on April 9, 2026. 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 Seidor ransomware attack?

The specific data stolen from Seidor 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, Seidor likely held sensitive business data, client information, and operational records.

How can organisations protect against Timc attacks?

To defend against Timc 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.