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high severity November 14, 2023 · 4 min read Unverified claim — what this is

NNDOMAIN Listed by cactus Ransomware Group

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

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

NNDOMAIN Listed by cactus Ransomware Group

National Nail Corp. was listed on the Cactus ransomware leak site on November 14, 2023, claiming that the Michigan-based manufacturer and distributor of construction fasteners suffered a ransomware attack in which internal files were exfiltrated. The company, which has operated for more than 50 years and generates roughly $679 million in annual revenue, has not publicly quantified how many individuals may have had their information exposed.

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Details from the Leak-Site Listing

The primary disclosure on the Cactus ransomware group’s leak portal states that National Nail data was exfiltrated during a ransomware incident. The listing does not specify the volume of records taken, the exact date of initial compromise, or the precise categories of files involved beyond noting that internal files were allegedly stolen. No ransom demand amount or payment deadline appears in the public portion of the listing. The company’s headquarters address in Grand Rapids, Michigan, along with its main phone number and website, are displayed alongside the breach notice, a common tactic used by the group to add legitimacy to their claim.

Why This Matters for You and Your Family

When a company like National Nail is hit, the people whose data ends up in the stolen files are ordinary customers, suppliers, contractors, and employees. Even though the exact data types remain undisclosed, construction-industry vendors and partners routinely exchange documents that can contain names, addresses, Social Security numbers, banking details, tax forms, and contracts. If any of those records belong to you or someone in your household, the exposure creates a permanent risk of identity theft, fraudulent loans opened in your name, or targeted phishing campaigns that reference real business relationships. Families connected to the building trades, hardware wholesalers, or roofing suppliers are especially likely to be affected even if they never directly interacted with National Nail.

The Doxxing and Identity-Chain Risks

Stolen internal files frequently contain spreadsheets that link employee or vendor email addresses to personal phone numbers, home addresses, and sometimes dates of birth. Threat actors then cross-reference those details with other breaches, creating long identity chains that tie your work identity to your personal accounts, social-media handles, and even your children’s online profiles. A single leaked business document can therefore accelerate doxxing campaigns or enable account takeovers on gaming platforms where kids use the same email address or a reused password. These chains are difficult to map manually because each new breach adds fresh connections faster than most people can track.

Cactus Ransomware Group’s Track Record

Public reporting attributes the Cactus ransomware group’s emergence to early 2023. The actors have since targeted organizations across manufacturing, healthcare, and professional services, typically gaining initial access through phishing or exploited remote-desktop services. After exfiltrating data, they encrypt systems and later publish samples on their leak site if the victim does not pay. Their playbook emphasizes steady pressure through partial data dumps rather than immediate mass publication, a tactic designed to encourage negotiation while still inflicting reputational harm. The National Nail listing fits this established pattern.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, handles, and real-world identity so you can see exactly where National Nail data may sit in broader exposure chains.
  • Rotate any password you used at National Nail or any related vendor portal, 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 surfaces you learn within hours instead of months.
  • Cover the entire household with DoxxScan family protection that extends to dependents and children’s gaming accounts, which often become the next link in doxxing chains when business credentials are reused at home.
  • Let DoxxScan remediation specialists manage takedown requests for any exposed personal records that appear on data-broker or extortion sites.

The National Nail breach underscores that even established manufacturers can become unwilling gateways to personal data theft. Taking deliberate steps now limits how far attackers can travel down the identity chains they are actively building. 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.

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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Report details & sourcing

Severity High
Disclosed November 14, 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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