Case file: Massachusetts Mutual Life Insurance Company
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Not stated in the filings
- Discovered
- No letter on file to read
- State and federal records
- 2 filings, May 4, 2026 to May 5, 2026
- Residents counted
- 42 in 2 states (MA, VT), latest filing per state
- Everyone affected
- No filing gives a total
- Information exposed
- Social Security number, Medical / health information, Financial / bank account
- Offered to those affected
- No letter on file to read
- Third party named
- No letter on file to read
- Prior incidents
- 7 earlier incidents on record for this organization
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Massachusetts Massachusetts OCABR | May 5, 2026 | 41 | No dates to count between | Record | |
| Vermont Vermont AG | May 4, 2026 | 1 | No dates to count between | Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
The statutes
- Massachusetts: no fixed period to notify residents from knowledge or reason to know of the breach, Mass. Gen. Laws ch. 93H, § 3. Attorney General and OCABR as soon as practicable and without unreasonable delay, every breach.
- Vermont: 45 days to notify residents from discovery or notification of the breach, 9 V.S.A. § 2435. Attorney General within 14 business days of discovery or of the consumer notice, whichever is sooner, every breach.
Prior incidents by Massachusetts Mutual Life Insurance Company
| Records | Breach window | Filed with | People |
|---|---|---|---|
| Mar 21, 2024 | Oct 29, 2023 | California | n/a |
| Aug 29, 2017 | Aug 17, 2017 | California | n/a |
| Dec 16, 2013 | Dec 3, 2013 | California | n/a |
| Oct 4, 2013 | Sep 13, 2013 | California | n/a |
| Jun 4, 2013 | May 8, 2013 | California | n/a |
| Mar 6, 2013 | Jan 30, 2013 | California | n/a |
| Jul 31, 2012 | Jul 13, 2012 | California | n/a |
Filings more than six months apart are shown as separate incidents.
Filings by others that name Massachusetts Mutual Life Insurance Company
Clients of a breached vendor often file under their own names and name the vendor.
- Massachusetts Mutual Life Insurance Company ("MassMutual"), California, Apr 27, 2023
Sources and method
Records as published by Massachusetts OCABR, Vermont AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 0 letters read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.