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Massachusetts Mutual Life Insurance Company: data breach filings, state by state

Massachusetts Mutual Life Insurance Company has 9 data breach filings on record in 3 government portals. The latest was reported to Massachusetts OCABR on May 5, 2026, with 41 Massachusetts residents. Data exposed, as filed: Social Security number, Medical / health information, Financial / bank account.

42residents counted in 2 states (MA, VT). Latest filing per state, last twelve months
9filings in 3 government portals
May 5, 2026latest filing, Massachusetts OCABR

By portal

PortalFilingsLatest reportPeople in the latest filing
Massachusetts OCABR1May 5, 202641 Massachusetts residents
Vermont AG1May 4, 20261 Vermont residents
California AG7Mar 21, 2024Not published

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 Massachusetts Mutual Life Insurance Company 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
Massachusetts Mutual Life Insurance Company Massachusetts OCABR MA May 5, 2026 41 Social Security numberMedical / health informationFinancial / bank account
Massachusetts Mutual Life Insurance Company Vermont AG VT May 4, 2026 1 Social Security numberMedical / health information
Massachusetts Mutual Life Insurance Company California AG CA Mar 21, 2024 Not published Social Security number
Massachusetts Mutual Life Insurance Company California AG CA Aug 29, 2017 Not published Social Security numberFinancial / bank accountDate of birthPhone number+2
Massachusetts Mutual Life Insurance Company California AG CA Dec 16, 2013 Not published Social Security numberFinancial / bank accountDate of birthUsernames / passwords+4
Massachusetts Mutual Life Insurance Company California AG CA Oct 4, 2013 Not published In the letter (PDF)
Massachusetts Mutual Life Insurance Company California AG CA Jun 4, 2013 Not published Social Security numberFinancial / bank accountDate of birthUsernames / passwords+4
Massachusetts Mutual Life Insurance Company California AG CA Mar 6, 2013 Not published Social Security numberFinancial / bank accountMedical / health informationHealth insurance+4
Massachusetts Mutual Life Insurance Company California AG CA Jul 31, 2012 Not published Social Security numberFinancial / bank accountDate of birthUsernames / passwords+4

Filings by other organizations that name Massachusetts Mutual Life Insurance Company

When a vendor is breached, its clients often file under their own names and mention the vendor.

OrganizationSourceStateReportedResidents affectedData exposed
Massachusetts Mutual Life Insurance Company ("MassMutual") California AG CA Apr 27, 2023 Not published Email address

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.