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Ransomware Victim Energy

Soleol

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

www.soleol.ch

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

Incident Analysis

Soleol 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 Soleol appeared on the group's dark web leak site.

Soleol is based in Switzerland , operating in the Energy sector. Switzerland ranks #13 globally for ransomware attacks, with 178 victims in our database.

Sector context: Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.

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 Soleol attacked by ransomware?

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

Which ransomware group attacked Soleol?

Soleol 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 Soleol ransomware attack occur?

The ransomware attack on Soleol 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 Soleol ransomware attack?

The specific data stolen from Soleol 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 Energy organisation, Soleol 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.