Skip to content
Back to Blog
high severity April 24, 2023 · 3 min read Unverified claim — what this is

TransMedics Listed by karakurt Ransomware Group

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

TransMedics, Inc., a medical device company, develops and provides portable warm blood perfusion system that allows for living organ transplant. 85 GB of this company data will leak online soon opening all the financial and accounting information to the public. You will find their business contracts, correspondence with BIG executives, detailed employee personal information and other confidential papers uploaded here this week. Seems like we are going to witness another stock fall.

— from Karakurt’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.
TransMedics Listed by karakurt Ransomware Group

On April 24, 2023, medical device company TransMedics, Inc. appeared on the leak site operated by the karakurt ransomware group. The listing states that attackers exfiltrated 85 GB of internal files during a ransomware incident and plan to publish them within days, exposing financial records, accounting data, business contracts, executive correspondence, and detailed employee personal information.

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.

Details in the Leak-Site Listing

The karakurt leak page, archived on ransomware.live, states that TransMedics data was taken in a ransomware attack. It explicitly lists the volume of material as 85 GB and names the categories that will be released: financial and accounting information, contracts, correspondence with senior executives, and employee personal records. The disclosure does not specify the exact number of individuals affected or the precise systems initially compromised. It warns that the full archive will be uploaded publicly within the week, with an implied threat that failure to meet extortion demands will result in permanent exposure.

Why This Matters for You and Your Family

When a healthcare-adjacent company like TransMedics loses control of internal documents, the ripple effects reach ordinary people. Employees, contractors, vendors, and even patients indirectly connected through transplant logistics may find their names, addresses, Social Security numbers, or compensation details dumped online. If your personal information appears in those files, it can be combined with data from earlier breaches to build a complete profile. Families are especially exposed because household members often share addresses, phone numbers, or email domains that appear in corporate spreadsheets.

Employee personal information released in bulk creates immediate risks of identity theft, tax fraud, and targeted phishing. The listing also threatens to publish contracts and executive correspondence, which can reveal business relationships that sophisticated criminals later exploit for spear-phishing attacks against smaller vendors or partners.

Doxxing and Identity-Chain Implications

Once employee data surfaces on a ransomware leak site, it rarely stays isolated. Threat actors scrape names, emails, and phone numbers and feed them into automated tools that link gaming handles, social-media accounts, and family relationships. A single leaked work email can expose a home address that then surfaces in children’s gaming accounts or school forms. These identity chains allow criminals to move from corporate extortion to personal doxxing, account takeovers, and harassment. Public reporting on similar incidents shows that credential leaks of this nature frequently cascade into consumer account compromises within weeks.

Karakurt’s Publicly Known Track Record

Public reporting attributes karakurt’s emergence to late 2021. The group operates a double-extortion model: it encrypts victim networks and simultaneously exfiltrates data, then demands payment to prevent publication. Notable prior victims include law firms, manufacturers, and healthcare-related organizations. Karakurt typically gains initial access through phishing, remote-desktop vulnerabilities, or compromised credentials, exfiltrates documents quietly, and posts samples or full archives on its leak site when negotiations stall. The group’s playbook emphasizes steady pressure through incremental data releases rather than immediate mass publication, though the TransMedics listing indicates a firm deadline this week.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by specialists.
  • Rotate any password you used at TransMedics or related vendors anywhere it has been reused, and switch to 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure is caught in hours, not months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts that often chain back to the same leaked address or email.
  • Let remediation specialists manage takedown requests for any exposed personal documents appearing on data-broker or leak sites.

The TransMedics incident illustrates how quickly corporate ransomware leaks become personal identity problems. One 85 GB archive can fuel months of downstream fraud and doxxing if left unchecked. Start your DoxxScan trial today for continuous monitoring, AI-powered identity-chain mapping, and hands-on remediation by specialists that protects both you and your family, including gaming accounts vulnerable to credential-stuffing attacks.

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.

Check your exposure
TransMedics is one listing. Your email is probably in others.
We can’t confirm any single incident against the sources we search, so we won’t pretend to. What we can show you is your own exposure — your email against 13.1B+ leaked records and the sites that publish your address. About 15 seconds. No account, no card.

By running your scan you agree to the Terms and Conditions and the Privacy Policy, and to GalaxyWarden emailing you the results of this scan.

Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed April 24, 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.
Share this Post on X Reddit Email