Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
CA
Ransomware Victim Government & Defense

Cassias MG Government

Ransomware attack by Emperador · Disclosed September 19, 2026 · 🇧🇷 Brazil

Date Disclosed
Sep 19, 2026
2026
Threat Group
Emperador
22 total victims
Country
🇧🇷 Brazil
Industry
Government & Defense

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 Cassias MG Government on its dark web leak site operated by Emperador on 19 September 2026. The organization is based in Brazil and operates in the Government & Defense sector.

About the Emperador group

Emperador has listed 15 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 Cassias MG Government incident — the source data does not record an entry point.

Incident Analysis

Cassias MG Government was targeted by Emperador ransomware, one of the most active ransomware groups in our database with 22 confirmed victims globally. The attack was disclosed on September 19, 2026, when Cassias MG Government appeared on the group's dark web leak site.

Cassias MG Government is based in Brazil , operating in the Government & Defense sector. Brazil ranks #7 globally for ransomware attacks, with 463 victims in our database.

Sector context: Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Emperador 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 19, 2026 14:00 UTC.

Frequently Asked Questions

Was Cassias MG Government attacked by ransomware?

Yes. Cassias MG Government was listed as a victim of the Emperador ransomware group on September 19, 2026. The organisation is based in Brazil and operates in the Government & Defense sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Cassias MG Government?

Cassias MG Government was attacked by Emperador ransomware. Emperador is one of the most active ransomware groups, having claimed 22 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Cassias MG Government ransomware attack occur?

The ransomware attack on Cassias MG Government was disclosed on September 19, 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 Cassias MG Government ransomware attack?

The specific data stolen from Cassias MG Government 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 Government & Defense organisation, Cassias MG Government likely held sensitive business data, client information, and operational records.

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.