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Tieu Dental Corporation: data breach filings, state by state

Tieu Dental Corporation has 3 data breach filings on record in 3 government portals. The latest was reported to Massachusetts OCABR on Mar 5, 2026, with 2 Massachusetts residents. Data exposed, as filed: Social Security number, Medical / health information.

2residents counted in 1 state (MA). Latest filing per state, last twelve months
8,918people in total, as reported to HHS OCR on Mar 5, 2026
3filings in 3 government portals
Mar 5, 2026latest filing, Massachusetts OCABR

By portal

PortalFilingsLatest reportPeople in the latest filing
Massachusetts OCABR1Mar 5, 20262 Massachusetts residents
California AG1Mar 5, 2026Not published
HHS OCR1Mar 5, 20268,918 in total

Counts are the organization's own, as filed with each agency. Most state portals count their own residents only, so no single state shows the whole incident. An organization can file more than once for the same incident, and for different ones.

Case file

Breach window
Jul 29, 2025
Discovered
Jan 11, 2026, as stated in the California letter
Offered to those affected
12 months of credit or identity monitoring through Experian
Third party named
Yes, the letter attributes the incident to a vendor or service provider
Days to notice
Past the statutory period in California, counted from discovery to the state's first record

Open the case fileWord document

Every filing with the agency links, each state's record against its statutory period with the citation, what the letter offers, prior incidents. Letter facts are quoted so you can check them.

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Every filing

OrganizationSourceStateReportedResidents affectedData exposed
Tieu Dental Corporation Massachusetts OCABR MA Mar 5, 2026 2 Social Security numberMedical / health information
Tieu Dental Corporation California AG CA Mar 5, 2026 Not published In the letter (PDF)
Tieu Dental Corporation HHS OCR US Mar 5, 2026 8,918 Medical / health information

Data reproduced from public government filings. Each row opens the record with the agency link. Spot an error? Email support@breachtally.com with the page link. Corrections are applied and noted.