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Ransomware Victim Consumer Services

Vennerhus Weine AG

Ransomware attack by Ransomhouse ยท Disclosed November 12, 2025 ยท ๐Ÿ‡จ๐Ÿ‡ญ Switzerland

www.vennerhus.ch

Date Disclosed
Nov 12, 2025
2025
Threat Group
Ransomhouse
140 total victims
Country
๐Ÿ‡จ๐Ÿ‡ญ Switzerland
Industry
Consumer Services

Incident Analysis

Vennerhus Weine AG was targeted by Ransomhouse ransomware, one of the most active ransomware groups in our database with 140 confirmed victims globally. The attack was disclosed on November 12, 2025, when Vennerhus Weine AG appeared on the group's dark web leak site.

Vennerhus Weine AG is based in Switzerland , operating in the Consumer Services sector. Switzerland ranks #13 globally for ransomware attacks, with 178 victims in our database.

Sector context: Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Ransomhouse 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 โ€” 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 1, 2026 06:00 UTC.

Frequently Asked Questions

Was Vennerhus Weine AG attacked by ransomware?

Yes. Vennerhus Weine AG was listed as a victim of the Ransomhouse ransomware group on November 12, 2025. The organisation is based in Switzerland and operates in the Consumer Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Vennerhus Weine AG?

Vennerhus Weine AG was attacked by Ransomhouse ransomware. Ransomhouse is one of the most active ransomware groups, having claimed 140 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Vennerhus Weine AG ransomware attack occur?

The ransomware attack on Vennerhus Weine AG was disclosed on November 12, 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 Vennerhus Weine AG ransomware attack?

The specific data stolen from Vennerhus Weine AG 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 Consumer Services organisation, Vennerhus Weine AG likely held sensitive business data, client information, and operational records.

How can organisations protect against Ransomhouse attacks?

To defend against Ransomhouse 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.