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MCBS LLC: data breach filings, state by state

MCBS LLC has 4 data breach filings on record in 4 government portals. The latest was reported to Texas AG on Jun 30, 2026, with 13,302 Texas residents. Data exposed, as filed: Social Security number, Medical / health information, Health insurance, Date of birth, Postal address.

13,685residents counted in 2 states (TX, MA). Latest filing per state, last twelve months
1,261,464people in total, as reported to HHS OCR on Jun 26, 2026
4filings in 4 government portals
Jun 30, 2026latest filing, Texas AG

By portal

PortalFilingsLatest reportPeople in the latest filing
Texas AG1Jun 30, 202613,302 Texas residents
California AG1Jun 26, 2026Not published
Massachusetts OCABR1Jun 26, 2026383 Massachusetts residents
HHS OCR1Jun 26, 20261,261,464 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.

The next state to file on MCBS LLC reaches subscribers within the hour. With the count, the data exposed and the letter. The Team plan follows the companies and vendors you name in every state. Start a 14-day free trial.
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Every filing

OrganizationSourceStateReportedResidents affectedData exposed
MCBS LLC Texas AG TX Jun 30, 2026 13,302 Social Security numberMedical / health informationHealth insuranceDate of birth+2
MCBS, LLC California AG CA Jun 26, 2026 Not published Medical / health information
MCBS, LLC Massachusetts OCABR MA Jun 26, 2026 383 Social Security numberMedical / health information
MCBS, LLC HHS OCR US Jun 26, 2026 1,261,464 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.