LatestStatesCompaniesPricingAPIData Start free trial

Latest / California / August 2017

Massachusetts Mutual Life Insurance Company

Massachusetts Mutual Life Insurance Company notified California AG on Aug 29, 2017 of a data breach, which occurred on Aug 17, 2017. Data exposed: Social Security number, Financial / bank account, Date of birth, Phone number, Postal address, Name.

All 9 filings by Massachusetts Mutual Life Insurance Company, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Massachusetts Mutual Life Insurance Company
Source
California AG · source record
Date reported
Aug 29, 2017
Date(s) of breach
Thursday, August 17, 2017
Residents affected
Not published by this source
Data exposed
Social Security number Financial / bank account Date of birth Phone number Postal address Name
Notice letter
Sample notice (PDF)
Discovered
Aug 20, 2017, as stated in the letter
"What happened : On August 20, 2017, MassMutual’s fraud prevention team identified potential fraudulent telephone activity directed toward MassMutual call centers."
Days to notice
9 days from discovery (Aug 20, 2017) to the California record (Aug 29, 2017). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
Offered in the letter
24 months of credit or identity monitoring through Experian
First seen by BreachTally
2026-10-30 16:17 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

First seen by BreachTally at 16:17 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the count, the data exposed and the letter. Start a 14-day free trial. We email you two days before the first charge and you cancel in one click.
Not today? Take the free Monday digest: the week's filings by state and the largest by people affected. Once a week.

Other filings by Massachusetts Mutual Life Insurance Company

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 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

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.