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high severity July 12, 2023 · 3 min read Unverified claim — what this is

NASCO.COM Listed by clop Ransomware Group

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

NASCO – NASCO is a healthcare company dedicated to co-creating digital health solutions for Blue Cross and Blue Shield companies.

— from Clop’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.
NASCO.COM Listed by clop Ransomware Group

On July 12, 2023, healthcare technology firm NASCO appeared on the leak site operated by the Clop ransomware group. The listing states that internal files were exfiltrated during a ransomware attack on the company, which provides digital health solutions for Blue Cross and Blue Shield plans. Anyone whose personal information flows through NASCO’s systems — policyholders, dependents, or healthcare employees — may now face heightened exposure.

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Details in the Leak-Site Listing

The Clop leak site entry for nasco.com states that attackers obtained internal files after breaching the company’s network. The disclosure does not quantify the number of records affected, list specific data types such as names, Social Security numbers, or medical claims, or provide a sample of the stolen material. It simply states that data was exfiltrated and gives a deadline for NASCO to negotiate before further publication. Public reporting on Clop’s past behavior indicates the group typically posts proof of compromise and then waits before releasing or selling the archive.

Why This Matters for You and Your Family

When a healthcare technology vendor like NASCO is breached, the ripple effects reach ordinary families. Your insurance records, member IDs, billing addresses, and dependent information often reside in the very systems these companies manage. Even if the listing does not detail exactly what was taken, the exposure of internal files means sensitive personal data that links you to your health plan could be in criminal hands. For many people this is the only notification they will receive, leaving families to protect themselves without clear guidance on the scope.

The Doxxing and Identity-Chain Risks

Stolen internal files frequently contain spreadsheets or databases that connect names, dates of birth, addresses, and policy numbers. Attackers and downstream fraudsters can chain this information with usernames, emails, or phone numbers found in other breaches to build complete identity profiles. These chains often extend to gaming accounts belonging to children or teens who share the same household email or phone. A single leaked insurance record can therefore anchor doxxing campaigns that expose family members across social media, gaming platforms, and financial services.

Clop’s Publicly Known Track Record

Public reporting attributes the Clop gang’s emergence to 2019, with a sharp increase in activity after it began exploiting vulnerabilities in file-transfer software such as GoAnywhere and MOVEit. Notable prior victims include large financial institutions, universities, and other healthcare-related organizations. The group’s typical playbook involves initial access through vulnerable remote-access tools or stolen credentials, followed by exfiltration of sensitive files before deploying ransomware. Rather than encrypt and demand payment immediately, Clop often prefers double-extortion: threatening to publish the data unless a ransom is paid. The leak-site listing for NASCO follows this established pattern.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, handles, and real identity, then use the cleanup of Warden to remove what you can.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure of your data is caught in hours rather than months.
  • Rotate any password you used at NASCO or related Blue Cross portals anywhere it has been reused, and switch to 2FA through an authenticator app instead of SMS.
  • Cover the household with DoxxScan family coverage that extends to dependents and children’s gaming accounts, which often chain back to the same address or parent email.
  • Let remediation specialists handle ongoing takedown requests across data brokers and extortion sites on your behalf.

The NASCO breach is a reminder that healthcare supply-chain attacks now touch millions of ordinary families who never signed up with the breached vendor. Staying ahead requires more than reactive checks; it demands continuous visibility and expert help. DoxxScan by GalaxyWarden delivers exactly that 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 and close the gaps before the next leak appears.

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 July 12, 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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