Skip to content
Back to Blog
high severity September 01, 2024 · 4 min read Unverified claim — what this is

cbt-gmbh.de Listed by ransomhub Ransomware Group

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

cbt-gmbh.de was listed on Ransomhub's leak site. Ransomhub claims to have stolen internal data. This is the group's claim, not a confirmed finding.

cbt-gmbh.de Listed by ransomhub Ransomware Group

On September 1, 2024, German IT consulting firm CBT GmbH appeared on the leak site operated by the RansomHub ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the company’s systems. The disclosure does not specify the number of records affected or the exact data types contained in the stolen material.

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 RansomHub Listing

The primary source is the RansomHub leak page itself, accessible via the .onion link hosted on ransomware.live. It states that CBT GmbH, a provider of software development, system integration, and IT infrastructure services based in Germany, suffered a ransomware incident resulting in data exfiltration. The group has not publicly quantified the volume of data taken, nor has it released samples beyond the initial announcement. As of the listing date, the disclosure indicates the company faces an impending deadline for negotiation, after which RansomHub threatens to publish or sell the stolen files.

Internal files exfiltrated is the only description provided; no customer lists, contracts, or personal data categories are explicitly named in the leak-site entry.

Why This Matters for You and Your Family

When an IT services company like CBT GmbH is breached, the ripple effects reach far beyond the corporate perimeter. Many small and mid-sized businesses rely on such firms for outsourced IT support, payroll systems, cloud hosting, or software that processes employee and customer information. If your employer, your child’s school, your doctor’s office, or your local supplier uses CBT GmbH, your personal details may now sit inside the exfiltrated archive even though the notification does not quantify affected records.

Once data leaves a company’s control, it can surface on dark-web markets, fraud forums, or in follow-on extortion campaigns. Families rarely learn about these exposures until fraudulent accounts appear or unexpected mail arrives. The breach therefore creates a concrete risk that your name, address, financial details, or login credentials could be traded or leveraged months from now.

Doxxing and Identity-Chain Risks

Ransomware groups rarely stop at one dataset. Stolen internal files often contain spreadsheets that link employee emails, client contacts, project codes, and sometimes personal identifiers. These fragments become the starting point for doxxing chains: an email address leads to a reused password, which leads to a breached gaming account belonging to a child, which reveals a home address. The result is a map that connects your online handles to your real-world identity.

Even when the initial leak does not list every record, the exposure of internal directories and configuration files can accelerate targeted phishing, SIM-swapping attempts, or spear-phishing campaigns against anyone whose data was stored on CBT GmbH systems. The longer the material remains unaddressed, the higher the chance that opportunistic criminals will combine it with other publicly available information to build persistent profiles.

RansomHub’s Known Track Record

Public reporting attributes RansomHub’s emergence to early 2024. The group has since claimed responsibility for attacks on organizations across North America, Europe, and Asia, frequently targeting mid-sized enterprises in technology, manufacturing, and professional services. Its typical playbook begins with initial access gained through compromised remote desktop credentials or exploited vulnerabilities in internet-facing applications. Once inside, operators exfiltrate sensitive files before deploying ransomware that encrypts remaining systems.

Extortion follows a double-pressure model: the victim is first threatened with encryption and then with public release of the stolen data on the RansomHub leak site. The group has shown willingness to auction particularly sensitive archives when negotiations stall. While exact success rates remain unclear, public trackers indicate RansomHub maintains an active pipeline of new victims each month, suggesting the CBT GmbH incident is part of an ongoing campaign rather than an isolated event.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, usernames, and real identity so you can see exactly what chains back to the CBT GmbH exposure.
  • Rotate any password you used at CBT GmbH or with any of its client systems, then enable 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next time your information appears it is caught within hours instead of months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often become the weakest link when credential leaks cascade into account takeovers.
  • Let DoxxScan remediation specialists handle data-broker takedown requests and persistent identifier cleanup on your behalf while you focus on securing day-to-day accounts.

The CBT GmbH breach is a reminder that even specialized IT providers can become gateways to personal exposure. Acting quickly on the signals this incident provides limits how far criminals can travel down the identity chain. Start your DoxxScan trial today; its continuous monitoring, AI-powered identity-chain mapping, hands-on remediation by specialists, and household coverage give you and your family a practical defense against both this leak and the ones that will inevitably follow.

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
cbt-gmbh.de 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 September 01, 2024
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