high severity March 25, 2023 · 3 min read Unverified claim — what this is

CESCE Listed by Stormous Ransomware Group

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

CESCEBRASIL, the guarantee insurance specialist, implements digital certificates to speed up the entire process of approval, issuance and transmission of policies, now digitally signed, to policyholders, brokers and customers
— from Stormous’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.

CESCE Listed by Stormous Ransomware Group

On March 25, 2023, Brazilian insurance specialist CESCEBRASIL appeared on the leak site operated by the Stormous ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the company, which provides guarantee insurance and uses digital certificates to streamline policy approval, issuance, and transmission to policyholders, brokers, and customers. The number of people whose information may have been taken remains unknown.

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Details in the Leak Listing

The Stormous leak site entry states that internal files were exfiltrated following a ransomware deployment. It does not specify the volume of data taken, the exact types of records involved, or any ransom demand. The disclosure indicates the incident targeted CESCEBRASIL’s operational environment, where digital signing processes handle policy documentation for customers across Brazil. Public reporting on Stormous shows the group routinely posts victim data when negotiations fail, and the listing for CESCEBRASIL follows that pattern.

Why This Matters for You and Your Family

When an insurance company’s internal files leave its network, the exposure can reach far beyond corporate systems. Policy documents, correspondence, and supporting records often contain names, addresses, national identification numbers, contact details, and financial arrangements tied to guarantees or claims. If your family holds any form of guarantee insurance, surety bond, or related policy with CESCEBRASIL, your information may now sit in an attacker’s archive. Even a single exposed record can serve as the starting point for identity theft, loan fraud, or targeted phishing that arrives months later when defenses are down.

Doxxing and Identity-Chain Risks

Insurance data leaks create long identity chains. A leaked policy file that links your name, address, and phone number can be cross-referenced with other breaches to map your full digital footprint. Attackers then target associated email accounts, banking logins, or government services. The same credentials or personal details sometimes appear in gaming platforms used by children or teenagers in the household. A compromised child’s gaming account can reveal the parent’s real identity through shared payment methods or recovery emails, turning one breach into a multi-generational exposure. Continuous monitoring across breach repositories is essential because these chains surface slowly and often without warning.

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What the free scan actually returns

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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

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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 Stormous · 191 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed March 25, 2023

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.

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Stormous — 191 incidents tracked

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