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Ransomware Victim Healthcare

Atenção Primária à Saúde Brazil

Ransomware attack by Nova · Disclosed December 4, 2025 · 🇧🇷 Brazil

saude.gov.br

Date Disclosed
Dec 4, 2025
2025
Threat Group
Nova
194 total victims
Country
🇧🇷 Brazil
Industry
Healthcare

ThreatAI Analysis

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

About the Nova group

Nova (formerly RALord) is a ransomware-as-a-service (RaaS) group that encrypts victims’files and uses double-extortion tactics to pressure organizations into paying for decryption and data non-disclosure. Nova has listed 178 victims since March 2025.

Incident Analysis

Atenção Primária à Saúde Brazil was targeted by Nova ransomware, one of the most active ransomware groups in our database with 194 confirmed victims globally. The attack was disclosed on December 4, 2025, when Atenção Primária à Saúde Brazil appeared on the group's dark web leak site.

Atenção Primária à Saúde Brazil is based in Brazil , operating in the Healthcare sector. Brazil ranks #7 globally for ransomware attacks, with 453 victims in our database.

Sector context: Healthcare organisations are high-value ransomware targets because patient data is extremely sensitive, regulatory penalties for breaches are severe, and operational downtime can threaten patient safety — all factors that increase ransom payment pressure.

Nova 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: Sep 10, 2026 10:00 UTC.

Frequently Asked Questions

Was Atenção Primária à Saúde Brazil attacked by ransomware?

Yes. Atenção Primária à Saúde Brazil was listed as a victim of the Nova ransomware group on December 4, 2025. The organisation is based in Brazil and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Atenção Primária à Saúde Brazil?

Atenção Primária à Saúde Brazil was attacked by Nova ransomware. Nova is one of the most active ransomware groups, having claimed 194 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Atenção Primária à Saúde Brazil ransomware attack occur?

The ransomware attack on Atenção Primária à Saúde Brazil was disclosed on December 4, 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 Atenção Primária à Saúde Brazil ransomware attack?

The specific data stolen from Atenção Primária à Saúde Brazil 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 Healthcare organisation, Atenção Primária à Saúde Brazil likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Nova attacks?

To defend against Nova 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.