MassMutual Financial Group

Disclosed Feb 20, 201313 years agoConfirmed

Official notice

What is known

People affected	Not stated in the sources we have
Disclosed	Feb 20, 2013
Happened	Dec 3, 2013
Attack	Not stated
Data exposed	Names, Addresses
Sector	Finance · US
Status	Confirmed

Sources

Source	Kind
Maine Attorney General breach notice archive: MassMutual Financial Groupmaine.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Maine AGresidents of ME	Feb 20, 2013	3
Maine AGresidents of ME	Mar 6, 2013
Maine AGresidents of ME	Jun 4, 2013	2
Maine AGresidents of ME	Dec 16, 2013	62

Other breaches at MassMutual Financial Group

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Oct 5, 2022Oct 5, 20223 years ago	Oct 5, 20223 years ago	Not stated	Finance	Confirmed	1,693

History of this record

2026-09-25 · disclosed: 2013-03-06 to 2013-02-20 · backfill source
2026-09-25 · data_types: ["names","addresses","names"] to ["names","addresses"] · backfill source
2026-09-25 · disclosed: 2013-06-04 to 2013-03-06 · backfill source
2026-09-25 · disclosed: 2013-12-16 to 2013-06-04 · backfill source
2026-09-25 · added · backfill source

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

Everything about MassMutual Financial Group

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