Phishing Attack on Business Associate Affects Tens of Thousands of Professional Dental Alliance Patients

Professional Dental Alliance, a network of dental practices affiliated with the North American Dental Group, has notified tens of thousands of patients that some of their protected health information was stored in email accounts that were accessed by an unauthorized individual between March 31 and April 1, 2021.

Professional Dental Alliance says the breach occurred at its vendor North American Dental Management. Steps were immediately taken to secure the affected accounts and prevent further unauthorized access. An investigation was launched which revealed several email accounts were accessed by an unauthorized individual after employees responded to phishing emails.

The investigation into the breach uncovered no evidence of attempted or actual misuse of patient data, with the investigators concluding the breach was likely limited to credential harvesting. A comprehensive review of the affected email accounts confirmed they contained protected health information such as names, addresses, email addresses, phone numbers, insurance information, Social Security numbers, dental information, and/or financial information. Professional Dental Alliance says the electronic dental record system and dental images were not accessed.

While it appears that protected health information was not stolen, affected individuals have been advised to exercise caution and review their credit reports and account statements and be vigilant for signs of misuse of their data.  Professional Dental Alliance says affected individuals are being offered complimentary membership to credit monitoring and identity theft protection services for two years.

The breach has been reported to the DHS’ Office for Civil Rights by each covered entity affected.  At least 125,760 patients are known to have had their protected health information exposed

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