Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

MassMutual Financial Group

Disclosed Feb 20, 2013Confirmed

Official notice

What is known

People affectedNot stated in the sources we have
DisclosedFeb 20, 2013
HappenedDec 3, 2013
AttackNot stated
Data exposedNamesAddresses
SectorFinance · US
StatusConfirmed

Sources

Official noticemaine.gov
Maine Attorney General breach notice archive: MassMutual Financial Group

Notices filed

Residents of MEFeb 20, 2013
Maine AG3 people
Residents of MEMar 6, 2013
Maine AGCount not stated
Residents of MEJun 4, 2013
Maine AG2 people
Residents of MEDec 16, 2013
Maine AG62 people

Other breaches at MassMutual Financial Group

Breach, details not statedBreach notice filed with the Indiana AG, details not stated.1,693 affectedFinanceUSOct 5, 2022
History of this record
disclosed2026-09-25
2013-03-06 to 2013-02-20by backfillSource
data_types2026-09-25
["names","addresses","names"] to ["names","addresses"]by backfillSource
disclosed2026-09-25
2013-06-04 to 2013-03-06by backfillSource
disclosed2026-09-25
2013-12-16 to 2013-06-04by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Maine AG), confirmed by Maine AG. Record counts are as reported. Not legal advice.

Everything about MassMutual Financial Group