Advanced Dental 2025 Data Breach
Healthcare provider · Dental care services · Local or regional clinic network · USA
Advanced Dental (CT) Practice Breach (2025): Patient Contact & SSN Records Exposed via Sinobi Ransomware
Dental practice with offices in Berlin and Cromwell, Connecticut.
Confirmed · ObscureIQ Intelligence
Breach Risk Index i
75/100
Lower riskHigher risk
High and current: recent, valuable data circulating on the dark web now.
Data Sensitivity i
ElevatedExposed data raises the risk of fraud, targeting, and impersonation. Proactive steps are warranted.
20KRecords
2025Year
The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.
Crucial data exposed
SSNSocial Security Number
Breach Summary
In November 2025, Advanced Dental, a practice with offices in Berlin and Cromwell, Connecticut, was hit by the Sinobi ransomware group, which published exfiltrated files on November 24, 2025. Forensic analysis of the leaked dataset confirmed exposure of about 19,500 unique email addresses and 15,500 phone numbers, plus a high-risk subset of roughly 2,400 unique Social Security numbers, along with names. The breach is catalogued by DataBreach.com.
Full threat analysis, exploitation vectors, and principal guidance below.
11 additional sections · verified field analysis · defensive doctrine
Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…
20K records analyzed
About Advanced Dental
Advanced Dental (Advanced Dental of New England, LLC) is a dental practice with offices in Berlin and Cromwell, Connecticut, offering general, cosmetic, and implant dentistry. It maintains patient identity, contact, insurance, billing, appointment, and treatment records for clinical and office administration.
Why They Hold Your Data
Dental clinics collect patient identity, contact, insurance, billing, appointment, and treatment records across care delivery and office administration workflows.
Recent Developments
In November 2025 Advanced Dental was targeted by the Sinobi ransomware group, which published exfiltrated files on its dark-web leak site on November 24, 2025. Forensic review confirmed the exposure, and affected individuals were advised to watch for identity theft and phishing.
Data Points Exposed
4 verified field types
Email Address
Full Name
Phone Number
Social Security Number Critical
Breach Impact
Most affected individuals had contact information (names, emails, phone numbers) exposed, but a subset of roughly 2,400 had Social Security numbers leaked, creating heightened identity-theft risk for those individuals. Association with a dental practice adds modest privacy sensitivity and enables convincing treatment- or billing-themed scams.
Exploitation & Downstream Threats
• Identity theft and synthetic identity construction using SSN (about 2,400 affected) | • Targeted phishing and smishing using exposed email and phone | • Dental billing/insurance-themed scams | • Account takeover from credential/contact exposure
Principal Risk Advisory
What this means for a principal
A healthcare-linked breach: exposure ties a named individual to a provider relationship and, where clinical or insurance data is present, to conditions and treatment. For a high-profile principal the main risk is credible impersonation and enrichment of existing exposure.
What You Should Do
- Freeze credit at all three bureaus and monitor for new-account and tax-refund fraud.
- Guard against SIM-swap and vishing: add a carrier port-out PIN and verify any 'support' calls independently.
- Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.
How ObscureIQ Can Help
- Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
- Exposure mapping and footprint neutralization: cross-reference against broker-available data and suppress still-removable elements, prioritizing address and phone, since this record re-seeds broker networks.
- ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
S
Threat Actor: SinobiConfidence: Low
Motivation: Unknown
A low-confidence alias without enough reliable public sourcing for a stable threat actor profile. It may be a misspelling, short-lived alias, or forum handle.
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