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high severity June 16, 2023 · 4 min read Unverified claim — what this is

NUANCE.COM Listed by clop Ransomware Group

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

Nuance - Conversational AI for Healthcare and Customer Engagement - Nuance

— 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.
NUANCE.COM Listed by clop Ransomware Group

On June 16, 2023, Nuance Communications 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 conversational AI tools used in healthcare and customer engagement systems. Anyone whose personal or medical information has passed through Nuance-powered platforms may now be at risk, even though the exact number of affected individuals remains unknown.

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Reported Details from the Listing

The Clop leak site entry for nuance.com explicitly claims that internal files were exfiltrated following a ransomware intrusion. It does not quantify the volume or types of data stolen, nor does it list specific record counts or name the systems compromised. The disclosure indicates the data is now held by the attackers and warns that it will be published if their demands are not met. Public mirrors of the leak site, such as ransomware.live, preserve this posting with the original timestamp of mid-June 2023.

Why This Matters for You and Your Family

When a healthcare-adjacent vendor like Nuance is breached, the exposure often reaches far beyond the company itself. Nuance’s technology processes voice data, clinical documentation, and customer service records for hospitals, insurers, and large call centers. If your doctor dictated notes, you spoke to an automated support line, or your insurance provider used Nuance tools, fragments of your medical history, voice prints, or contact details could sit inside the stolen files. The disclosure does not specify what was taken, which leaves every patient and customer in an uncomfortable limbo: assume your information is at risk until proven otherwise.

Ordinary families rarely realize how many third-party vendors touch their sensitive records. A single breach at this level can quietly add your name, date of birth, address, and health details to underground marketplaces. Once that happens, the information rarely stays contained.

The Doxxing and Identity-Chain Risk

Stolen internal files frequently contain spreadsheets that link employee and customer identities to emails, phone numbers, and external account references. Attackers and subsequent buyers can chain these details with credential leaks from other breaches to seize control of email accounts, banking portals, or government services. In healthcare contexts the risk is sharper: medical identity theft can lead to fraudulent claims filed in your name, delayed treatment, or blackmail attempts using sensitive diagnoses.

Children’s records are not immune. Many families share email addresses or phone numbers across parent and child accounts. A gaming username tied to a family email address exposed in the Nuance files can become the starting point for doxxing chains that reveal home addresses, school names, and daily routines. Credential leaks like this one cascade into account takeovers that stretch across both corporate and personal life.

Clop’s Publicly Known Track Record

Public reporting attributes the Clop group’s emergence to 2019, when it began deploying the Clop ransomware variant derived from the earlier CryptoMix family. The actors are known for targeting large enterprises and subsequently shifting to double-extortion tactics: encrypting victim networks while simultaneously exfiltrating sensitive files for later public release. Notable prior victims include large financial institutions, software vendors, and healthcare-related service providers. Their typical playbook involves initial access through vulnerable remote desktop services or exploited file-transfer appliances, followed by weeks of internal reconnaissance, data exfiltration, and then ransom demands backed by the threat of leak-site publication. The Nuance listing follows this established pattern.

What to do

  • Run a DoxxScan to map every link between your emails, phone numbers, usernames, and real-world identity so you can see exactly what chains back to the Nuance breach.
  • Rotate any password you ever used on nuance.com or related services and enable 2FA through an authenticator app rather than text messages.
  • 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, which often chain to the same addresses and emails stolen in vendor breaches like this.
  • Let remediation specialists handle data-broker takedown requests and opt-out processes that would otherwise consume months of your own time.

The Nuance breach is a reminder that your data is only as safe as the weakest vendor that touches it. Starting with a clear map of your exposure and putting continuous monitoring and specialist remediation in place gives you practical control instead of waiting for the next leak. DoxxScan by GalaxyWarden delivers that combination of 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 June 16, 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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