high severity April 15, 2024 · 3 min read Unverified claim — what this is

Thermodyn Corporation Listed by medusa Ransomware Group

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

Thermodyn Corporation (founded 1979) is a coated fabrics and expansion joint manufacturing. Thermodyn specializes in Viton Fluoroelastomer based technologies for gasket fabrication, expansion joints, Fluorodyn caulk & adhesives, and various elastomeric coated substrates. Thermodyn corporate office is located in 3550 Silica Rd, Sylvania, Ohio, 43560, United States and has 22 employees. The total amount of data leakage is 16.70 GB
— from Medusa’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.

Thermodyn Corporation Listed by medusa Ransomware Group

On April 15, 2024, Thermodyn Corporation appeared on the Medusa ransomware group’s leak site with 16.70 GB of internal files listed for public download. The Ohio-based manufacturer of coated fabrics and expansion joints, founded in 1979, is the latest small-business victim in a wave of ransomware attacks that treat company data as leverage for extortion. If you or your family have ever done business with Thermodyn, worked there, or had personal information stored in its systems, your data may now sit on a dark-web server waiting to be sold or published.

Already exposed?

You can’t unleak data. You can take away what it’s worth.

A leaked record is where it starts, not where it ends. What turns it into your front door is the look-up sites publishing your address beside your name — and those are what an AI reads when somebody asks about you. The free scan shows you both. We write to 582 companies.

See what is exposed about you — free scan →

Not ready yet? Run a free breach check on this email

We’ll check it against 13.1B+ leaked records right now — no account needed. Continuous monitoring & alerts are part of Protection.

Reported Details from the Listing

The Medusa leak site states that Thermodyn suffered a ransomware attack in which attackers exfiltrated internal files before encrypting systems. The posting includes a sample of the stolen data and claims a total volume of 16.70 GB. The disclosure does not specify the exact types of records taken, nor does it list the number of people affected. It simply states that business files were removed and are now hosted on the extortion platform. The corporate address listed on the site matches Thermodyn’s long-time location at 3550 Silica Rd, Sylvania, Ohio.

Why This Matters for You and Your Family

Even though Thermodyn employs only 22 people, the breach can ripple outward. Vendors, customers, contractors, and their families often appear in invoices, contracts, HR files, or correspondence that ends up in corporate repositories. Once those records reach a ransomware leak site, anyone named in them becomes easier to target. Personal information that once lived behind corporate firewalls can surface in fraud attempts, phishing campaigns, or identity-theft packages sold on underground forums. For ordinary families this means increased risk of account takeovers, loan fraud, or harassing calls that begin with details only your vendor or employer should possess.

The Doxxing and Identity-Chain Risks

Ransomware operators rarely stop at one dataset. A single leaked email or phone number from Thermodyn’s files can be cross-referenced with breaches at retailers, schools, or gaming services you use. That linkage creates an identity chain: an attacker who obtains your work-related contact can then locate your children’s usernames, home address, or family photos posted elsewhere. These chains accelerate doxxing, SIM-swapping attempts, and spear-phishing tailored to your household. Credential leaks of this nature frequently cascade into gaming-account takeovers, where children’s profiles become entry points for further extortion or malware delivery.

You’ve used today’s 5 free articles · resets tomorrow

Create a free account to keep reading

The rest of this article comes straight back — free, no card, nothing you’ve already read goes away. Then see whether your own data is exposed too: the scan on this site is free with or without an account, and the account is what keeps the result after the emailed link expires.

Free reader account

No card, no charge. You read the blog without a limit — every article, no daily count — and it saves your exposure-scan results so you can open them again after the emailed link expires. We won’t email you anything else unless you tick the box asking us to. The next step shows what the paid plans add — free stays the first option on it.

Create a free account →

Free accounts are for personal use. If you’re reading for a company, that’s Signals (terms).

Reading this for a company?

GalaxyWarden Signals watches the organisations you name and emails you when one of them actually discloses — SEC 8-K Item 1.05 filings and corroborated breach records, with a JSON API. It monitors companies, not people: it does not scan you and does not remove your personal data.

See GalaxyWarden Signals →

Or make a free reader account first

Already have an account? Log in

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.

Report details & sourcing

Attributed to Medusa · 515 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed April 15, 2024

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

Medusa — 515 incidents tracked

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

Related breaches

high August 22, 2026