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high severity May 07, 2023 · 3 min read Unverified claim — what this is

marshallconstruction.co.uk Listed by lockbit3 Ransomware Group

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

MARSHALL CONSTRUCTIONEstablished in 1983 we are one of Scotland’s foremost independent building contractors

— from LockBit’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.
marshallconstruction.co.uk Listed by lockbit3 Ransomware Group

On May 07, 2023, the Scottish building contractor Marshall Construction appeared on the LockBit 3.0 ransomware leak site, claiming that the company had been hit by a ransomware attack in which internal files were exfiltrated.

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Reported Details from the Listing

The LockBit 3.0 leak page states that Marshall Construction, established in 1983 and operating as one of Scotland’s independent building contractors, had its internal files taken during a ransomware incident. The disclosure does not quantify the number of records affected, list specific data types beyond “internal files,” or reveal the ransom demand. It simply presents the company name, a short corporate description, and a countdown timer typical of the group’s extortion playbook. No customer, employee, or partner names are shown in the initial public listing itself.

Why This Matters for You and Your Family

When a construction firm like Marshall Construction suffers a breach, the exposed internal files can contain contracts, invoices, employee payroll details, insurance records, and correspondence that include names, addresses, dates of birth, and financial information belonging to ordinary people. If you or your family have ever worked with a building contractor in Scotland, supplied materials, or been listed on a renovation project, your personal data may now sit in an attacker-controlled archive. Internal files exfiltrated in ransomware attack means the information is no longer protected by the company’s own security controls and can be traded or published at any time.

Doxxing and Identity-Chain Risks

Ransomware operators rarely stop at one dataset. A single leaked email or phone number from a contractor’s files can be combined with information from other breaches to build a complete identity chain. Attackers link your work history, home address, family members’ names, and even children’s online gaming accounts that reuse the same password or recovery email. Once the chain exists, targeted doxxing, SIM-swapping, or account takeover becomes straightforward. Credential leaks of this nature frequently cascade into gaming platforms, where a child’s handle can expose the entire household.

LockBit 3.0’s Known Track Record

Public reporting attributes the LockBit group’s first appearance to 2019. It rebranded as LockBit 2.0 in 2021 and released version 3.0 in 2022. The gang has targeted hospitals, manufacturers, local governments, and construction companies across multiple continents. Their standard playbook involves initial access through phishing, remote desktop protocol brute-force, or stolen credentials, followed by rapid exfiltration of sensitive files before encryption. They then publish a sample of stolen data on their leak site and demand payment within a short window, threatening full publication or sale of the archive if the deadline passes. The Marshall Construction listing follows this exact pattern.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, with cleanup handled by the service.
  • Rotate any password you used at marshallconstruction.co.uk or with related suppliers, 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 exposure surfaces in hours instead of months.
  • Cover the household with DoxxScan family protection that extends to dependents and children’s gaming accounts that often chain back to the same credentials.
  • Let remediation specialists manage takedown requests for any personal information already appearing on data-broker or extortion sites.

The incident shows how quickly a regional contractor’s breach can place ordinary families in the crosshairs of professional ransomware operators. Staying ahead requires more than changing one password; it demands ongoing visibility into how your information travels across the internet. DoxxScan by GalaxyWarden delivers that visibility through continuous monitoring across 13.1B+ breach records and 100+ platforms, AI-powered identity-chain mapping, hands-on remediation by specialists, and full household coverage that includes children’s gaming accounts. Start your DoxxScan trial today to close the gaps attackers rely on.

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.

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marshallconstruction.co.uk is one listing. Your email is probably in others.
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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed May 07, 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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