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RECEITA FEDERAL DO BRASIL

Claimed by Emperador · listed 2 hours ago

Today
Age
since listed · data leaked

Status timeline

  1. ListedSep 23, 2026
  2. Data leakeddate unknown

At a glance

Group
Emperador
Status
Data leaked
Country
Brazil
Sector
Government & Defense
Listed on leak site
Sep 23, 2026

About the victim

AI dossier — public-source company profile

Receita Federal do Brasil (Brazilian Federal Revenue Service) is the tax and revenue administration agency of Brazil's Ministry of Finance, responsible for federal tax collection, customs, and financial oversight.

Industry
Government & Defense

Attack summary

Severity: critical — Exfiltration of credentials and PII from a major Brazilian government tax agency represents a critical threat to national infrastructure, citizen privacy, and financial security. Compromise of gov.br authentication undermines trust in multiple government systems.

The grupo Emperador claims to have exfiltrated several thousand documents containing personnel data, customer records, and user credentials (including passwords) from gov.br systems.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • personnel records
  • customer data
  • gov.br user accounts with passwords

What the group claims

MINISTÉRIO DA FAZENDA SECRETARIA DA RECEITA FEDERAL DO BRASIL The archives contain several thousand documents with personnel and customer data, as well as all user date on gov.br with passwords. [Sector: Finance]

The leak post

captured from the group's site
MINISTÉRIO DA FAZENDASECRETARIA DA RECEITA FEDERAL DO BRASILThe archives contain several thousand documents with personnel and customer data,as well as all user date on gov.br with passwords.

Sources

Source

Indexed 2 hours ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About emperador

Emperador is a ransomware group first observed in August 2026 with an apparent financial motivation, though its limited operational history makes comprehensive attribution difficult at this time. Based on available data, the group has recorded at least one confirmed victim, with targeting concentrated in the Philippines and a demonstrated focus on the Government and Defense sector, suggesting either opportunistic targeting or a deliberate interest in sensitive public-sector data. Specific details regarding initial access vectors, encryption methodologies, and tooling have not been publicly documented by CISA, the FBI, Mandiant, or other reputable threat intelligence sources as of this profile's compilation, and no affiliation with known ransomware-as-a-service ecosystems or established threat actor clusters has been formally established. No notable high-profile campaigns, record ransom demands, or law enforcement actions have been publicly attributed to this group, which is consistent with its nascent operational timeline and minimal victim count. Given its very recent emergence and limited observed activity, Emperador should be considered an emerging and uncharacterized threat requiring continued monitoring, particularly by organizations operating within Philippine government and defense environments. The group has been linked to 41 public disclosures across our corpus. First observed on a leak site on August 12, 2026; most recent post September 23, 2026. The operation is currently active.

Timeline of this disclosure

  • September 23, 2026RECEITA FEDERAL DO BRASIL listed by emperador on the group's public leak site

Other recent disclosures by emperador

emperador has been linked to 41 public victims on Darkfield. A sample of the most recent:

See the full emperador dossier →

Sector and geography

This disclosure adds to ransomware activity in the Government & Defense sector, which has 6 disclosures indexed across all operators we track. Geographically, RECEITA FEDERAL DO BRASIL is reported in Brazil, a country with 209 ransomware disclosures in our corpus.

If your organisation is affected

A listing by emperador means RECEITA FEDERAL DO BRASIL appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CERT.br (Brazil), as required for your jurisdiction.
  • Monitor for the data appearing on emperador's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.