high severity October 22, 2024 · 3 min read Unverified claim — what this is

Sabesp Listed by RansomHouse Ransomware Group

If you are a customer of Sabesp, here’s what is being claimed, and what it would mean for you.

In the name of our partners we apologize for the inconveniences that many people have to bear because of the incident. But we also want to explain the situation a bit more.First of all, the stories the Sabesp representatives tell you that they will restore their infrastructure are all lies.Our partners report that more than 2.000 servers were taken down and there are no chances those will be restored without our help as the company has no backups. If they had that data backed up, that would have already been restored.Taking into account the level of professionalism of the IT crew employeed in
— from RansomHouse’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

Sabesp Listed by RansomHouse Ransomware Group

On October 22, 2024, Brazilian water utility Sabesp appeared on the leak site operated by the RansomHouse ransomware group. The listing states that internal files were exfiltrated during a ransomware attack and claims the company’s public statements about restoring infrastructure are false. The disclosure indicates that more than 2,000 servers were taken down and that Sabesp has no usable backups.

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Details in the RansomHouse Listing

The primary disclosure on the RansomHouse onion site, archived via ransomware.live, does not quantify the number of affected individuals or list specific data types beyond “internal files.” It asserts that Sabesp’s IT team lacks the capability to recover without paying the attackers. The listing includes an apology from the group “in the name of our partners” for the inconvenience caused to the public. No ransom amount or payment deadline is stated in the publicly visible portion of the post. The incident is classified as a ransomware attack involving both encryption and data exfiltration for extortion.

Why This Matters for You and Your Family

If you live in São Paulo or rely on Sabesp for water and sanitation services, your personal information may sit inside the stolen internal files. Utility companies routinely store names, addresses, government identification numbers, payment histories, and contact details. Even though the exact records taken remain unknown, the exposure creates immediate risk of identity theft, phishing, and financial fraud targeted at you and your household. When a large public utility is hit, the blast radius reaches ordinary families who never chose to do business with cybercriminals.

The Doxxing and Identity-Chain Risks

Stolen internal files often contain spreadsheets that link customer accounts to addresses, phone numbers, emails, and sometimes employee logins. These details become the starting point for doxxing chains: attackers or data resellers cross-reference the leak with other breaches to build complete profiles. A single exposed email or phone number can unlock gaming accounts, social-media handles, and family relationships. Credential leaks of this kind frequently cascade into account takeovers that affect both parents and children. DoxxScan by GalaxyWarden continuously monitors across 13.1 billion+ breach records and more than 100 platforms, using AI-powered identity-chain mapping to surface these connections before they are exploited.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to RansomHouse · 217 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed October 22, 2024

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

Threat-actor tracker

RansomHouse — 217 incidents tracked

Every breach we've attributed to RansomHouse, in one running log. See who else they've hit →

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