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high severity December 24, 2023 · 3 min read Unverified claim — what this is

Prefeitura Municipal de Itabira Listed by alphv Ransomware Group

If you are a resident of Prefeitura Municipal de Itabira, here’s what is being claimed, and what it would mean for you.

LAST CHANCE TO START NEGOTIATIONS ÚLTIMA OPORTUNIDADE PARA NEGOCIAR

— from Alphv’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.
Prefeitura Municipal de Itabira Listed by alphv Ransomware Group

On December 24, 2023, the Brazilian municipality of Prefeitura Municipal de Itabira appeared on the leak site of the alphv ransomware group with the stark warning “LAST CHANCE TO START NEGOTIATIONS” and its Portuguese equivalent. The listing indicates that internal files were exfiltrated during a ransomware attack on the city government, although the exact number of affected residents and the full scope of records remain undisclosed by both the attackers and the municipality.

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Reported Details from the Listing

The alphv leak site entry states that internal files were exfiltrated following a ransomware deployment. No specific volume of records or types of personal data are detailed in the posting. The threat actors gave the municipality a final opportunity to negotiate before public release of the stolen material. As of the listing date, the disclosure does not confirm whether any data has been published in full or remains behind a paywall. Public reporting on alphv operations shows this pattern is consistent with their double-extortion model: encrypt systems, exfiltrate documents, then pressure the victim with both decryption demands and the threat of leaks.

Why This Matters for You and Your Family

When a city government suffers a breach, the people whose records sit in those internal files are ordinary residents—taxpayers, parents, students, and retirees. Even without an exact headcount, any data held by a municipal authority can include names, addresses, national identification numbers, family compositions, property records, or licensing information. Once that material leaves official control, it can surface on dark-web markets or forums where identity thieves and fraudsters shop. For you and your family this means heightened risk of targeted phishing, tax fraud, or impersonation scams that exploit local-government data most people assume is safely locked away.

The Doxxing and Identity-Chain Risk

Internal municipal files frequently link disparate pieces of information: an email address used for property-tax correspondence, a phone number tied to a child’s school registration, or a username associated with a local service portal. Attackers and subsequent buyers can chain these fragments together to build a complete profile. A single leaked government record can expose not only your identity but also the gaming accounts, social-media handles, and family-member details that reference the same home address. Credential leaks of this nature routinely cascade into account takeovers, especially for children’s gaming platforms where parental email addresses serve as recovery contacts. DoxxScan by GalaxyWarden continuously monitors 13.1 billion+ breach records across more than 100 platforms and uses AI-powered identity-chain mapping to surface these connections before they are exploited.

Alphv’s Publicly Known Track Record

Public reporting attributes the alphv group, also known as BlackCat, with emerging in late 2021 after the shutdown of the REvil ransomware operation. The gang has since hit hospitals, schools, municipalities, and private companies across multiple continents. Their typical playbook begins with initial access gained through compromised remote-desktop credentials or exploited vulnerabilities, followed by lateral movement, data exfiltration, and deployment of custom ransomware. After encryption they demand payment for both decryption and deletion of stolen files. When victims refuse to pay, alphv publishes samples and eventually full datasets on their leak site, often maintaining pressure through countdown timers and multilingual notices. The Itabira listing follows this exact pattern.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by the service.
  • Enable continuous DoxxScan monitoring so the next breach exposing your municipal or government records is caught in hours rather than months.
  • Rotate any password used on Itabira municipal portals or related local-government services anywhere it has been reused, and switch to 2FA through an authenticator app instead of SMS.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts often chained to the same residential address.
  • Let remediation specialists manage takedown requests for any exposed personal documents that appear on broker sites or forums.

The Itabira incident demonstrates once again that local-government systems are high-value targets whose compromise directly affects the privacy of everyday families. A forward-looking approach means treating every new municipal breach as a prompt to lock down your own identity chain before criminals complete it. Start your DoxxScan trial today and place continuous monitoring and specialist remediation between your family and the next leak.

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 sample582 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.

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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed December 24, 2023
Last reviewed August 8, 2026
Affected Unconfirmed
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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