Incident

Tieu Dental Corporation Data Breach


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Tieu Dental Corporation, an oral and maxillofacial surgery practice in California, reports a data breach. 

Hackers breached the network between July 28 and July 29, 2025. Tieu Dental engaged cybersecurity experts to perform a forensic investigation and identify the stolen files. The compromised data includes:

  • Full names
  • Social Security numbers
  • Dates of birth
  • Medical records
  • Treatment plans and prescriptions
  • Health insurance information

The nature of the attack and the number of affected individuals is not disclosed. The practice is providing affected individuals with one year of free identity restoration and credit monitoring services.

Security professionals advise affected patients to check their insurance "explanation of benefits" for fraudulent medical claims and to monitor their credit reports for unauthorized accounts.

Tieu Dental Corporation Data Breach