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high severity April 03, 2023 · 4 min read Unverified claim — what this is

Sonda Listed by medusa Ransomware Group

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

Sonda was listed on Medusa's leak site. Medusa claims to have stolen internal data. This is the group's claim, not a confirmed finding.

Sonda Listed by medusa Ransomware Group

On April 3, 2023, Chilean IT giant SONDA appeared on the leak site of the Medusa ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the multinational company, which employs more than 13,000 people across 11 countries and serves customers in over 3,000 cities throughout Latin America. Anyone whose personal or corporate data passed through SONDA’s systems may now be exposed.

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Details in the Medusa Listing

The Medusa leak site entry, still accessible via its .onion address, claims that SONDA suffered a ransomware intrusion and that attackers successfully removed internal files. The disclosure does not quantify the number of records affected, list specific data types beyond “internal files,” or reveal the volume of data taken. It also does not state whether customer databases, employee records, or partner information were included. As is typical with ransomware leak sites, the posting serves both to pressure the victim and to demonstrate proof of access to potential buyers or other criminals.

April 3, 2023 marks the first public confirmation of the incident through the ransomware ecosystem. No separate regulatory filing or customer notification detailing the breach scope has been referenced in the primary listing.

Why This Matters for You and Your Family

SONDA provides IT services, digital transformation projects, and managed infrastructure to thousands of organizations and public-sector entities across Latin America. If you or your family members work for a company that uses SONDA, shop at a retailer it supports, or live in a municipality whose systems it maintains, your personal information may have been inside the compromised environment. Even when exact record counts remain unknown, the exposure of internal files frequently includes spreadsheets with names, national identification numbers, contact details, contract information, and employee data.

Once such material leaves a corporate network, it circulates among criminal groups who repurpose it for identity theft, tax fraud, or spear-phishing campaigns aimed at households. Ordinary families are the ones left dealing with unauthorized loans taken out in their names or suspicious charges on shared accounts.

Doxxing and Identity-Chain Risks

Internal files from an IT services provider often contain email addresses, usernames, phone numbers, and project metadata that link corporate identities to personal ones. Attackers can combine these fragments with data from previous breaches to build detailed profiles. A single leaked work email can reveal your personal Gmail reuse pattern; a phone number listed in a vendor file can tie your social-media handles to your physical address.

These identity chains accelerate doxxing. Criminals use them to locate family members, target children’s gaming accounts that share the same household email, or impersonate you in support calls. The Medusa listing does not detail what was taken, yet the nature of an IT services company makes it likely that such linking information exists somewhere in the exfiltrated material.

Medusa Ransomware Group’s Track Record

Public reporting attributes Medusa’s emergence to late 2021. The group operates a double-extortion model: it encrypts victim systems and simultaneously exfiltrates data, then threatens to publish the stolen files unless a ransom is paid. Notable prior victims include organizations in healthcare, education, and technology sectors across multiple continents. Medusa typically gains initial access through compromised credentials or vulnerable remote-desktop services, moves laterally to locate valuable data stores, and maintains a leak site to publicly shame non-paying targets. Its playbook relies on speed and persistent pressure rather than sophisticated malware, making timely detection difficult for many mid-sized service providers.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup of Warden to remove what you can.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure surfaces in hours rather than months.
  • Rotate any password you used at SONDA or any linked vendor portal, then replace it with a unique passphrase and enable 2FA through an authenticator app everywhere that credential was reused.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often chain back to the same addresses or parent emails exposed in corporate files.
  • Let remediation specialists handle ongoing takedown requests across data brokers and leak forums on your behalf while you focus on securing daily digital habits.

The incident underscores how even regional IT leaders can become gateways to widespread personal exposure when ransomware groups strike. Staying ahead requires more than changing a few passwords; it demands visibility into how your information travels across the criminal underground. DoxxScan by GalaxyWarden delivers that visibility through continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, and hands-on remediation by specialists, with household coverage that includes children’s gaming accounts vulnerable to credential-stuffing attacks that follow breaches like this one.

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
Disclosed April 03, 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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