BREACHCONFIRMED
Massachusetts Mutual Life Insurance Company ("MassMutual") Data Breach
insurance_company • financial
Unknown
Records Affected
Feb 1, 2023
Disclosed
insider
Attack Vector
Data Exposed
NamesAddressesEmail AddressesPhone NumbersDates of BirthSocial Security NumbersAccount Numbers
Timeline
OccurredFebruary 1, 2023
DiscoveredFebruary 2, 2023
DisclosedFebruary 1, 2023
Related Coverage
Last updated: February 6, 2026