Advanced Dental 2025 Data Breach
ObscureIQ Breach Intelligence
High SeverityWebsite / service breach
Advanced Dental (CT) Practice Breach (2025): Patient Contact & SSN Records Exposed via Sinobi Ransomware
Dental practice with offices in Berlin and Cromwell, Connecticut.
Verified by ObscureIQ Intelligence
72/100Breach Risk Index
22Data Value
60Market Recency
170dSince Breach
Breach Intelligence Summary
Entity: Advanced Dental · Actor: Sinobi · Sources: 2 references
Attack: Ransomware / Extortion
Profile: Healthcare provider · Dental care services · Local or regional clinic network · USA
Timeline: Breach (2025-11-23) · Indexed (Jan 19, 2026) · Year (2025)
Exposure: 20K records · 4 fields: Email Address, Full Name, Phone Number, Social Security Number
Status: Confirmed
Executive 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.
ObscureIQ assessment: High risk of identity theft, insurance fraud, and targeted scams using treatment or billing pretexts. Healthcare affiliation also creates privacy harm even when the record set is limited.
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.
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 High
Phone Number
Social Security Number Critical
Field names are shown in full for clarity and search visibility. Canonical machine keys are emitted only in this page’s structured data.
Exploitation & Downstream Threats
Threat Activity:High
Primary 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
Threat vectors:
- Full identity theft & synthetic identity fraud (SSN subset)
- Name-based social engineering
- SIM swapping, vishing & SMS phishing
- Phishing, credential stuffing & account takeover
Threat Actor: Sinobi
Sinobi
Ransomware / Extortion
Attribution and method are based on available breach intelligence. Reported attack vector: Ransomware / Extortion.
Recommended Actions
If you believe your information may be included:
Protect Your ID Documents
Government-ID exposure enables document fraud — monitor and report misuse.
Enable MFA Everywhere
Turn on multi-factor authentication on email first, then financial accounts.
Report & Recover
If you spot misuse, start an official recovery plan and report fraud.
Frequently Asked Questions
What happened in the Advanced Dental breach?▾
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…
What data was exposed?▾
Verified fields include Email Address, Full Name, Phone Number, Social Security Number.
What should I do if I was affected?▾
Change reused passwords, enable MFA, and (if identity or financial data is involved) freeze your credit and monitor your accounts.
Sources & References
Every claim on this page is traceable. This breach draws on:
Breach Index
ObscureIQ Intelligence
ObscureIQ proprietary analysis
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