high severity March 11, 2026 · 4 min read Unverified claim — what this is

Composition Systems Listed by Qilin Ransomware Group

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

Composition Systems 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.

Composition Systems Listed by Qilin Ransomware Group

On March 11, 2026, Composition Systems appeared on the leak site operated by the qilin ransomware group. The attackers claim they stole internal files from the company and have published a sample of the allegedly exfiltrated data. Anyone whose personal information was stored in those systems could now be exposed.

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What Public Reporting Shows

Public reporting indicates that Composition Systems was listed on the qilin ransomware leak site on March 11, 2026. The group states it exfiltrated internal files during a ransomware incident. Available details do not specify the exact number of people affected or the precise volume of data involved. The exposed material is described as internal files, which in similar incidents often include employee records, customer information, contracts, and other sensitive business documents that can contain names, addresses, dates of birth, contact details, and financial data.

The listing follows the typical ransomware pattern of initial access, data theft, encryption of systems where possible, and subsequent public pressure through a leak site. No independent verification of the full dataset has been published beyond what the group itself has shown.

Why This Matters for You and Your Family

When a company that handles everyday business records suffers a breach, the information can end up in the hands of criminals who specialize in identity theft, fraud, and harassment. If your employer, your doctor, your child’s school, or a service you use works with Composition Systems, your details may now be circulating. Names, addresses, phone numbers, and dates of birth are the building blocks criminals need to open accounts in your name, file fraudulent tax returns, or target your family with phishing attacks.

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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 · 2349 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed March 11, 2026

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 — 2349 incidents tracked

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

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