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high severity March 08, 2023 · 3 min read Unverified claim — what this is

MAKLERSOFTWARE Listed by blackbasta Ransomware Group

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

Maklersoftware was listed on Blackbasta's leak site. Blackbasta claims to have stolen internal data. This is the group's claim, not a confirmed finding.

MAKLERSOFTWARE Listed by blackbasta Ransomware Group

On March 08, 2023, German company Maklersoftware GmbH appeared on the leak site operated by the Black Basta ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the provider of ASP and data-center solutions serving the insurance and financial sectors. The exact number of records exposed remains unknown, and the leak-site posting does not detail the specific documents or data types taken.

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Primary Disclosure Details

The Black Basta leak site entry, accessible via the .onion link indexed by ransomware.live, states that Maklersoftware’s systems were compromised and that attackers successfully removed internal files before encrypting remaining data. The notification does not quantify affected records, list file names, or specify whether customer databases, contracts, or employee information were included. Maklersoftware, located at 14 Hansestrasse in Lübeck, Germany, provides software-as-a-service solutions primarily to insurance brokers and financial-services firms. No public breach notification from the company itself has surfaced to date, leaving the full scope of the incident unclear beyond what the ransomware operators chose to publish.

Why This Matters for You and Your Family

If you hold an insurance policy, investment account, or financial product brokered through a firm that uses Maklersoftware’s platform, your personal information may have been inside the stolen files. Internal files exfiltrated in such attacks frequently contain scanned contracts, correspondence, policy numbers, bank details, and contact records. Even though the precise contents are unknown, the exposure creates immediate risk for anyone whose broker or adviser relies on this German ASP provider. Your family’s financial footprint, once leaked, does not expire; it can be recombined with other stolen data for months or years.

Doxxing and Identity-Chain Risks

Ransomware leaks like this one rarely stop at the initial publication. Attackers and subsequent buyers often cross-reference stolen documents against other breaches to build complete identity profiles. An email address found in a Maklersoftware file can be linked to your online shopping accounts, social-media handles, or children’s gaming profiles. These connections allow threat actors to reset passwords, impersonate you to insurers, or launch convincing spear-phishing campaigns. Credential leaks of this nature frequently cascade into account takeovers that expose even more personal data, lengthening the doxxing chain.

Black Basta’s Known Track Record

Public reporting attributes the Black Basta group’s emergence to early 2022. The operators have since hit hospitals, manufacturers, and professional-services firms across North America and Europe. Their typical playbook begins with initial access gained through compromised remote-desktop credentials or phishing, followed by rapid lateral movement, data exfiltration, and deployment of ransomware that also wipes event logs. After encryption they demand payment in Bitcoin and, if unpaid, publish samples on their leak site to pressure victims. The group has repeatedly demonstrated willingness to release sensitive commercial and personal data when ransom negotiations fail.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, handles, and real-world identity, then use the cleanup of Warden to shrink your exposed footprint.
  • Rotate any password you ever used at Maklersoftware or with affected brokers, 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 time your data surfaces you learn within hours instead of months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often become entry points when credential leaks chain back to the same home address.
  • Let remediation specialists handle data-broker takedown requests and opt-out processes that would otherwise consume weeks of your time.

The incident underscores that even specialized B2B software providers can become gateways to personal financial data. A single listing on a ransomware site can quietly feed identity thieves for years. 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 the expanding web of breach consequences.

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Sample resultyou@email.comIllustrative — not a real person

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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.

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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed March 08, 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.
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