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Cyber Threat
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Ransomware victim Healthcare

MyM ODONTOCLINICA S.A

Listed by Emperador on · organisation based in Brazil

Disclosed
Oct 14, 2026
Leak-site listing date
Threat group
Emperador
62 victims listed
Country
Brazil
#7 most targeted
Sector
Healthcare

ThreatAI analysis

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

Emperador listed MyM ODONTOCLINICA S.A on its dark web leak site on 14 October 2026, a Brazilian healthcare organisation with 38 victims reported to date.

About the Emperador group

Emperador has listed 38 victims since August 2026.

Vulnerabilities Emperador is recorded exploiting

5 of these 5 are in the CISA Known Exploited Vulnerabilities catalog, 5 of them recorded by CISA as used in ransomware campaigns. CVEs attributed to Emperador across its reported activity. There is no indication that any of these was involved in the MyM ODONTOCLINICA S.A incident — the source data does not record an entry point.

Incident analysis

MyM ODONTOCLINICA S.A was listed by Emperador ransomware, a group with 62 victims recorded in this database. The listing appeared on the group's leak site on October 14, 2026.

MyM ODONTOCLINICA S.A is based in Brazil and operates in the Healthcare sector. Brazil ranks #7 worldwide for ransomware disclosures, with 523 victims in this 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.

Emperador 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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 MyM ODONTOCLINICA S.A attacked by ransomware?

Yes. MyM ODONTOCLINICA S.A was listed as a victim of the Emperador ransomware group on October 14, 2026. 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 MyM ODONTOCLINICA S.A?

MyM ODONTOCLINICA S.A was attacked by Emperador ransomware. Emperador is one of the most active ransomware groups, having claimed 62 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the MyM ODONTOCLINICA S.A ransomware attack occur?

The ransomware attack on MyM ODONTOCLINICA S.A was disclosed on October 14, 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 MyM ODONTOCLINICA S.A ransomware attack?

The specific data stolen from MyM ODONTOCLINICA S.A 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, MyM ODONTOCLINICA S.A likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Emperador attacks?

To defend against Emperador 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.