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Cyber Threat
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Ransomware victim Energy

Sabesp

Listed by Ransomhouse on · organisation based in Brazil

sabesp.com.br

Disclosed
Nov 1, 2024
Leak-site listing date
Threat group
Ransomhouse
159 victims listed
Country
Brazil
#7 most targeted
Sector
Energy

ThreatAI analysis

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

About the Ransomhouse group

RansomHouse is a double-extortion RaaS operation active since late 2021, attributed to the threat actor "Jolly Scorpius," targeting over 120 organizations across healthcare, finance, transportation, and government, recently upgrading to a multi-layered dual-key encryption architecture. Ransomhouse has listed 212 victims since June 2021.

Incident analysis

Sabesp was listed by Ransomhouse ransomware, a group with 159 victims recorded in this database. The listing appeared on the group's leak site on November 1, 2024.

Sabesp is based in Brazil and operates in the Energy sector. Brazil ranks #7 worldwide for ransomware disclosures, with 534 victims in this database.

Sector context. Energy sector attacks can have critical infrastructure implications. Ransomware on operational technology (OT) networks can disrupt power generation and distribution, elevating the urgency of recovery.

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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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

Yes. Sabesp was listed as a victim of the Ransomhouse ransomware group on November 1, 2024. The organisation is based in Brazil and operates in the Energy sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Sabesp?

Sabesp was attacked by Ransomhouse ransomware. Ransomhouse is one of the most active ransomware groups, having claimed 159 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Sabesp ransomware attack occur?

The ransomware attack on Sabesp was disclosed on November 1, 2024. 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 Sabesp ransomware attack?

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

How can organisations protect against Ransomhouse attacks?

To defend against Ransomhouse 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.