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high severity February 27, 2024 · 4 min read Unverified claim — what this is

mcalvain.com Listed by cactus Ransomware Group

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

Download link #1:  https://***************.onion/MCO/PROOF/Mirror: https://cactus5dqnqkppa5ayckiyk6dttpqwczdqphv5mxh4dkk5ct544q5aad.onion/MCO/PROOF/DATA DESCRIPTIONS: Сonfidential personal identification data, private information, financial data, construction projects, agreements, drawings, corporate correspondence, accounting, operational data, top managers and key employees' personal folders and much more.

— from Cactus’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.
mcalvain.com Listed by cactus Ransomware Group

On February 27, 2024, construction firm mcalvain.com appeared on the leak site operated by the cactus Ransomware Group. The listing states that the company suffered a ransomware attack in which internal files were exfiltrated. Anyone whose personal or financial records were held by the company may now be exposed.

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Reported Details from the Leak

The cactus leak site lists mcalvain.com and provides two .onion links: one marked PROOF and a second containing the claimed stolen data. The posting does not specify the exact number of affected individuals. It describes the material taken as confidential personal identification data, private information, financial data, construction projects, agreements, drawings, corporate correspondence, accounting records, operational data, and the personal folders of top managers and key employees. The disclosure indicates the data was obtained during a ransomware incident but supplies no additional technical details about the initial breach vector or the volume of records involved.

Why This Matters for You and Your Family

When a company that handles contracts, payments, or employment records is breached, the information stolen often includes details that belong to ordinary people. If you worked with McAlvain Construction, supplied materials, signed agreements, or had your background checked as part of a project, your name, address, Social Security number, bank information, or employment file could be among the records now circulating on a criminal site. Financial data and personal identification data are especially valuable to identity thieves who can open accounts, file fraudulent tax returns, or sell the information on underground markets. Even if you are not a direct customer, family members listed as contacts or beneficiaries may also be placed at risk.

The Doxxing and Identity-Chain Risks

Leaked corporate folders frequently contain more than isolated records. They can link an individual’s work email to personal phone numbers, home addresses, family member names, and even notes about dependents. Once these connections surface, attackers can chain them with credentials from other breaches to take over email accounts, reset passwords on banking or government portals, and ultimately dox victims publicly. Credential leaks of this nature also cascade into gaming accounts. Children’s usernames, linked emails, or reused passwords from a parent’s work-related files can lead to account takeovers on Roblox, Fortnite, Discord, or Steam, exposing chat logs, payment methods, and real-world identities. The longer the data sits on a ransomware site, the greater the chance that multiple criminal groups will obtain and combine it with other stolen datasets.

Cactus Ransomware Group Track Record

Public reporting attributes the cactus Ransomware Group with emerging in late 2023 as a double-extortion operation. The group typically gains initial access through phishing, remote-desktop protocol brute force, or exploited vulnerabilities in unpatched software. After exfiltrating sensitive files, it encrypts victim systems and posts samples on its leak site to pressure payment. Notable prior targets have included organizations in manufacturing, healthcare, and professional services, though exact victim counts and ransom amounts are rarely confirmed by the group itself. The playbook relies on public shaming and the implicit threat that stolen data will be sold or published if demands are not met. The mcalvain.com listing follows this established pattern.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity, then use the cleanup of Warden to remove what you can.
  • Rotate any password you used at mcalvain.com or related vendor portals 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 of your data is caught and acted on in hours, not months.
  • Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts that often chain back to the same addresses and emails.
  • Let the remediation specialists handle takedown requests across data brokers and extortion sites for you while you focus on securing your own accounts.

The breach of mcalvain.com is a reminder that construction-industry vendors and their business partners sit on the same sensitive personal data as banks and hospitals. Acting quickly on credential hygiene and identity mapping limits how far criminals can travel down the chain that now begins with this leak. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 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 understand exactly what is exposed and begin closing the gaps.

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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mcalvain.com 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 February 27, 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.
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