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Cyber Threat
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Ransomware victim Manufacturing

Tharisa

Listed by Umbra on · organisation based in South Africa

Disclosed
Oct 7, 2026
Leak-site listing date
Threat group
Umbra
10 victims listed
Country
South Africa
#31 most targeted
Sector
Manufacturing

ThreatAI analysis

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

About Tharisa

Tharisa is a Cyprus-based mining group focused on the production and processing of platinum group metals (PGMs) and chrome, with major operations in South Africa and development projects in Zimbabwe.

Source record: ransomware.live

About the Umbra group

Umbra has listed 1 victims since October 2026.

Incident analysis

Tharisa was listed by Umbra ransomware, a group with 10 victims recorded in this database. The listing appeared on the group's leak site on October 7, 2026.

Tharisa is based in South Africa and operates in the Manufacturing sector. South Africa ranks #31 worldwide for ransomware disclosures, with 109 victims in this database.

Sector context. Manufacturing companies are frequently targeted because production downtime directly translates to financial loss. Ransomware operators exploit this time-sensitivity to demand higher ransoms and faster payment.

Umbra 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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 Tharisa attacked by ransomware?

Yes. Tharisa was listed as a victim of the Umbra ransomware group on October 7, 2026. The organisation is based in South Africa and operates in the Manufacturing sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Tharisa?

Tharisa was attacked by Umbra ransomware. Umbra is one of the most active ransomware groups, having claimed 10 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Tharisa ransomware attack occur?

The ransomware attack on Tharisa was disclosed on October 7, 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 Tharisa ransomware attack?

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

How can organisations protect against Umbra attacks?

To defend against Umbra 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.