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DX.On

listed as dxon.com.br · Claimed by 0day Syndicate · listed 2 months ago

49d
Age
since listed · data leaked

Status timeline

  1. ListedMay 28, 2026
  2. Data leakeddate unknown

At a glance

Group
0day Syndicate
Status
Data leaked
Country
Brazil
Sector
Business Services
Listed on leak site
May 28, 2026

About the victim

AI dossier — public-source company profile

DX.On is a Brazilian data intelligence and technology company headquartered in São Paulo that specializes in risk management, fraud prevention, and compliance solutions. Operating in B2B mode across insurance, credit, debt collection, and compliance sectors, the company processes over 40 billion data transactions annually and serves fintechs, banks, insurers, pension funds, utilities, and government entities.

Industry
Data Intelligence & Risk Management / Financial Services Technology
Address
Av. das Nações Unidas, 12399, 7º Andar - Brooklin Paulista, CEP 04578-000, São Paulo, SP, Brazil

Attack summary

Severity: high — DX.On processes sensitive financial and personal data at scale (40B+ annual transactions) for regulated sectors (insurance, credit, banking, compliance). Exfiltration of such data would expose PII and financial information of end-users across multiple institutions, with regulatory (LGPD) implications. However, no proof files or specific data inventory details are published in the post, preventing a 'critical' classification.

0day Syndicate claims to have breached DX.On and exfiltrated data. The leak post provides no specific details on the scope of exfiltration, data types compromised, or operational impact.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • customer data
  • transactional records
  • fraud prevention datasets
  • compliance information

What the group claims

DXON is a Brazilian company that provides data intelligence and fraud prevention solutions.

Sources

Source

Indexed 2 months 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 0day Syndicate

0day Syndicate is a ransomware group first observed in May 2026 with an apparent financial motivation, consistent with the broader cybercriminal ransomware ecosystem. With only four known victims documented at this time, the group remains relatively obscure with limited publicly available technical analysis from major threat intelligence sources such as CISA, FBI, or Mandiant. Based on available victimology data, the group has targeted organizations primarily in Brazil, Ghana, and the United States, with a focus on the Business Services and Technology sectors, suggesting a deliberate interest in data-rich organizations that may be more inclined to pay ransoms to protect sensitive client information. Given the nascent nature of this group and the limited open-source intelligence available, attribution regarding country of origin, affiliation with other threat actors, and specific technical tooling cannot be responsibly stated at this time. Similarly, whether the group operates as a Ransomware-as-a-Service platform or as an independent closed operation remains unconfirmed in public reporting. No notable high-profile campaigns, law enforcement actions, or documented rebranding activity have been publicly attributed to this group as of the time of this assessment. Given the group's recent emergence and low victim count, 0day Syndicate should be monitored as an emerging threat, with particular attention warranted by organizations in the targeted sectors and geographies pending further technical intelligence development. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on May 28, 2026; most recent post May 29, 2026. The operation is currently active.

Timeline of this disclosure

  • May 28, 2026dxon.com.br listed by 0day Syndicateon the group's public leak site

Other recent disclosures by 0day Syndicate

0day Syndicate has been linked to 5 public victims on Darkfield. A sample of the most recent:

See the full 0day Syndicate dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, dxon.com.br is reported in Brazil, a country with 200 ransomware disclosures in our corpus.

If your organisation is affected

A listing by 0day Syndicate means dxon.com.br 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 0day Syndicate'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.