Impact & Downstream Threats
This breach carries moderate risk due to the nature of exposed data fields and the scale of affected records.
- SIM swap attacks where phone numbers are present
- Targeted phishing campaigns using exposed email addresses
Breach Intelligence
Executive Summary
In November 2025, Advanced Dental, a practice with locations in Berlin and Cromwell, Connecticut, was targeted in a cyberattack attributed to the Sinobi ransomware group. Following the attackers' publication of exfiltrated files on their dark web leak site on November 24, 2025, forensic analysis of the compromised dataset confirmed the exposure of sensitive personally identifiable information (PII). The breach impacted a significant number of individuals, involving 19,500 unique email addresses and 15,500 unique phone numbers. Most critically, the leak exposed high-risk government identification data, including 2,400 unique Social Security Numbers (SSNs), placing the affected individuals at heightened risk for identity theft and targeted phishing campaigns.,
About Advanced Dental
Dental practice or dental services provider.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 20K records identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Recommended Actions
⚠️ Do not assume this is low sensitivity.
Non-clients may request a breach impact review.
Frequently Asked Questions
In November 2025, Advanced Dental experienced a data breach that exposed approximately 20K records containing personal information.
The exposed data includes fields such as email address, full name, phone number.
Approximately 20K records were affected based on current breach intelligence.
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- A public-facing individual
- A high-profile executive
- A customer of Advanced Dental
- Or concerned about credential reuse
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