high severity December 31, 2025 · 3 min read Unverified claim — what this is

Quasar Listed by Qilin Ransomware Group

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

Quasar was listed on the qilin ransomware leak site. The group claims to have stolen internal data.
— from Qilin’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.

On December 31, 2025, Quasar appeared on the leak site operated by the qilin ransomware group. The attackers claim to have stolen internal files from the company during a ransomware incident and have published a sample of the allegedly exfiltrated data.

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What Public Reporting Shows

Public reporting indicates that Quasar was listed on the qilin ransomware leak site on the last day of 2025. The group states it obtained internal company files after deploying ransomware. No confirmed victim count has been released, and the precise volume or sensitivity of the stolen data remains unclear from available reporting. The listing includes a sample download link, a common tactic used by ransomware operators to pressure victims into payment.

December 31, 2025 marks the public disclosure date on the leak site. The data described consists of internal files rather than a straightforward customer database breach, though such material often contains employee records, vendor contracts, or customer information that can be repurposed for identity theft.

Why This Matters for You and Your Family

When a company like Quasar suffers a ransomware attack, the information taken can easily include personal details that belong to ordinary customers, employees, or business partners. If your name, address, email, phone number, or financial records were among the internal files, criminals can use them to open accounts, file fraudulent tax returns, or impersonate you. Your family members’ information is often stored in the same systems, meaning one breach can expose an entire household.

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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 sample580 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.

Report details & sourcing

Attributed to Qilin · 2351 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed December 31, 2025

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.

Threat-actor tracker

Qilin — 2351 incidents tracked

Every breach we've attributed to Qilin, in one running log. See who else they've hit →

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