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Ransomware Victim Construction

Söllner

Ransomware attack by Sarcoma · Disclosed November 20, 2025 · 🇩🇪 Germany

soellner.de

Date Disclosed
Nov 20, 2025
2025
Threat Group
Sarcoma
141 total victims
Country
🇩🇪 Germany
Industry
Construction

Incident Analysis

Söllner was targeted by Sarcoma ransomware, one of the most active ransomware groups in our database with 141 confirmed victims globally. The attack was disclosed on November 20, 2025, when Söllner appeared on the group's dark web leak site.

Söllner is based in Germany , operating in the Construction sector. Germany ranks #3 globally for ransomware attacks, with 843 victims in our database.

Sector context: Construction firms often hold sensitive project data, client financials, and intellectual property. The industry's typically lean IT security teams can make them more vulnerable.

Sarcoma 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: Aug 4, 2026 10:00 UTC.

Frequently Asked Questions

Was Söllner attacked by ransomware?

Yes. Söllner was listed as a victim of the Sarcoma ransomware group on November 20, 2025. The organisation is based in Germany and operates in the Construction sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Söllner?

Söllner was attacked by Sarcoma ransomware. Sarcoma is one of the most active ransomware groups, having claimed 141 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Söllner ransomware attack occur?

The ransomware attack on Söllner was disclosed on November 20, 2025. 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 Söllner ransomware attack?

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

How can organisations protect against Sarcoma attacks?

To defend against Sarcoma 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.