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Cyber Threat
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Ransomware victim

********rta.ch

Listed by Cloak on · organisation based in Switzerland

Disclosed
Oct 18, 2026
Leak-site listing date
Threat group
Cloak
134 victims listed
Country
Switzerland
#13 most targeted
Sector
Not recorded

ThreatAI analysis

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

About the Cloak group

Cloak is a ransomware-as-a-service operation active since late 2022, primarily targeting small-to-medium enterprises in Europe — especially Germany — across manufacturing, healthcare, education, and government sectors, with expansion into North American and Asian targets by 2025. Cloak has listed 166 victims since August 2023.

Incident analysis

********rta.ch was listed by Cloak ransomware, a group with 134 victims recorded in this database. The listing appeared on the group's leak site on October 18, 2026.

********rta.ch is based in Switzerland. Switzerland ranks #13 worldwide for ransomware disclosures, with 221 victims in this database.

Cloak typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was ********rta.ch attacked by ransomware?

Yes. ********rta.ch was listed as a victim of the Cloak ransomware group on October 18, 2026. The organisation is based in Switzerland. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked ********rta.ch?

********rta.ch was attacked by Cloak ransomware. Cloak is one of the most active ransomware groups, having claimed 134 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the ********rta.ch ransomware attack occur?

The ransomware attack on ********rta.ch was disclosed on October 18, 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 ********rta.ch ransomware attack?

The specific data stolen from ********rta.ch 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. Sensitive business data was likely targeted.

How can organisations protect against Cloak attacks?

To defend against Cloak 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.