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Ransomware Victim Government & Defense

The Municipal Chamber of Serra

Ransomware attack by Thegentlemen ยท Disclosed July 31, 2026 ยท ๐Ÿ‡ง๐Ÿ‡ท Brazil

camaraserra.es.gov.br

Date Disclosed
Jul 31, 2026
2026
Threat Group
Thegentlemen
703 total victims
Country
๐Ÿ‡ง๐Ÿ‡ท Brazil
Industry
Government & Defense

Incident Analysis

The Municipal Chamber of Serra was targeted by Thegentlemen ransomware, one of the most active ransomware groups in our database with 703 confirmed victims globally. The attack was disclosed on July 31, 2026, when The Municipal Chamber of Serra appeared on the group's dark web leak site.

The Municipal Chamber of Serra is based in Brazil , operating in the Government & Defense sector. Brazil ranks #7 globally for ransomware attacks, with 418 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.

Thegentlemen 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 โ€” 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: Aug 5, 2026 06:00 UTC.

Frequently Asked Questions

Was The Municipal Chamber of Serra attacked by ransomware?

Yes. The Municipal Chamber of Serra was listed as a victim of the Thegentlemen ransomware group on July 31, 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 The Municipal Chamber of Serra?

The Municipal Chamber of Serra was attacked by Thegentlemen ransomware. Thegentlemen is one of the most active ransomware groups, having claimed 703 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the The Municipal Chamber of Serra ransomware attack occur?

The ransomware attack on The Municipal Chamber of Serra was disclosed on July 31, 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 The Municipal Chamber of Serra ransomware attack?

The specific data stolen from The Municipal Chamber of Serra 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, The Municipal Chamber of Serra likely held sensitive business data, client information, and operational records.

How can organisations protect against Thegentlemen attacks?

To defend against Thegentlemen 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.