Massachusetts Mutual Life Insurance Company
ent_019e5e58edfc4918e2c75ee38ecaf8de
Disclosures
25+
State AG · 8 jurisdictions
Multi-filing incidents
6
incidents joining 2+ filings here
Max affected reported
11,744
nationwide · State AG IN
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- Massachusetts Mutual Life Insurance Company
- Normalized
- massachusetts mutual life insurance— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- R6ZXK5P01NP6HXSY1S07
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (newest 25)newest first
- Vermont State AGas victim2026-05-04
Massachusetts Mutual Life Insurance Company reported a data breach to the Vermont Attorney General. The breach was reported to the AGO on 2026-05-04. The reporting organization type is Financial Services. 1 Vermont residents were affected. Categories of data breached: Social Security Numbers, Health Records.
- Indiana State AGas victim2026-05-01
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2025-03-02 and was reported on 2026-05-01. 2 Indiana residents were affected. 200 individuals affected in total.
- Indiana State AGas victim2026-02-13
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2025-04-07 and was reported on 2026-02-13. 14 Indiana residents were affected. 29 individuals affected in total.
- Indiana State AGas victim2025-12-11
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2024-10-21 and was reported on 2025-12-11. 4 Indiana residents were affected. 272 individuals affected in total.
- Nebraska State AGas victim2025-12-11
Massachusetts Mutual Life Insurance Company reported a data breach involving its third-party vendor, Conduent Business Services, LLC. Unauthorized access to Conduent's systems occurred between October 21, 2024, and January 13, 2025. The incident impacted two Nebraska residents, exposing names, health care IDs, dates of service, treatment costs, claim numbers, and Social Security numbers. Cigna, the plan administrator, notified MassMutual on October 9, 2025. Remediation included engaging forensic firms, resetting passwords, and providing 24 months of credit monitoring.
- Massachusetts State AGas victim2025-12-04
Massachusetts Mutual Life Insurance Company Company reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-12-04. 56 Massachusetts residents were affected.
- Massachusetts State AGas victim2024-11-12
Massachusetts Mutual Life Insurance Company reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-11-12. 5 Massachusetts residents were affected.
- Indiana State AGas victim2024-08-30
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2024-03-10 and was reported on 2024-08-30. 2 Indiana residents were affected. 500 individuals affected in total.
- Massachusetts State AGas victim2024-08-15
Massachusetts Mutual Life Insurance Company reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-08-15. 70 Massachusetts residents were affected.
- Idaho State AGas victim2024-08-15
Massachusetts Mutual Life Insurance Company notified the Idaho Attorney General on August 15, 2024, of a security incident involving three Idaho residents. The breach originated from a third-party vendor partner of HealthEquity, a benefits administrator for MassMutual. Unauthorized access occurred via compromised vendor accounts, exposing names, SSNs, and health data. MassMutual and HealthEquity engaged forensic experts, reset credentials, and provided credit monitoring services.
- Indiana State AGas victim2024-04-26
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2024-02-13 and was reported on 2024-04-26. 15 Indiana residents were affected. 5,577 individuals affected in total.
- Massachusetts State AGas victim2024-04-26
Massachusetts Mutual Life Insurance reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-04-26. 309 Massachusetts residents were affected.
- Massachusetts State AGas victim2024-04-25
Massachusetts Mutual Life Insurance reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-04-25. 1 Massachusetts residents were affected.
- Massachusetts State AGas victim2024-03-21
Massachusetts Mutual Life Insurance reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-03-21. 1,092 Massachusetts residents were affected.
- Indiana State AGas victim2024-03-21
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2023-11-02 and was reported on 2024-03-21. 143 Indiana residents were affected. 11,744 individuals affected in total.
- Idaho State AGas victim2024-03-21
MassMutual notified the Idaho AG of a ransomware incident affecting 39 Idaho residents. The breach occurred on Nov 2, 2023, at Infosys McCamish Systems (IMS), a third-party provider for Newport Group, MassMutual's recordkeeper. MassMutual was notified on Nov 6, 2023. Affected data includes names, SSNs, addresses, and dates of birth. IMS engaged Unit 42 for remediation and EY for e-discovery. No evidence of data misuse was found. Identity protection services are being offered.
- California State AGas victim2024-03-21
Massachusetts Mutual Life Insurance Company (Newport) reported a data breach involving a third-party service provider, IMS. The incident occurred on October 29, 2023. Affected data includes names, addresses, dates of birth, and Social Security numbers of plan participants and beneficiaries, including minors. No evidence of misuse was found. The company offered two years of complimentary identity protection via Experian IdentityWorks.
- Massachusetts State AGas victim2024-02-06
Massachusetts Mutual Life Insurance reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-02-06. 11 Massachusetts residents were affected.
- Massachusetts State AGas victim2023-11-06
Massachusetts Mutual Life Insurance Company reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-11-06. 5 Massachusetts residents were affected. The report records the breach type as paper.
- Massachusetts State AGas victim2023-07-19
Massachusetts Mutual Life Insurance Company reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-07-19. 37 Massachusetts residents were affected. The report records the breach type as electronic.
- Maine State AGas victim2023-07-19
Massachusetts Mutual Life Company ("MassMutual") reported an external system breach that occurred on May 29, 2023, and was discovered on June 23, 2023. The breach impacted 242 individuals, compromising their names and Social Security numbers. Affected individuals were notified on July 17, 2023, and offered 24 months of credit monitoring services through Kroll.
- Indiana State AGas victim2023-07-17
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2023-05-29 and was reported on 2023-07-17. 4 Indiana residents were affected. 242 individuals affected in total.
- Indiana State AGas victim2023-05-04
Massachusetts Mutual Life Insurance Company reported a data breach to the Indiana Attorney General. The breach occurred on 2023-02-01 and was reported on 2023-05-04. 2 Indiana residents were affected. 1,534 individuals affected in total.
- California State AGas victim2023-04-27
MassMutual experienced unauthorized access to an independent agency employee's online account on February 1, 2023. The company became aware of the incident on February 2, 2023. The breach involved personal information, including names and potentially other identity data, accessed via the employee's Microsoft Outlook mailbox. MassMutual secured the account, launched an investigation, and offered 24 months of identity protection services through IdentityForce to affected individuals.
- Montana State AGas victim2023-04-27
Massachusetts Mutual Life Insurance Company notified Montana residents of unauthorized access to an independent agency employee's online account on February 1, 2023. The incident involved exposure of personal information from emails and files. MassMutual secured the account, investigated, and offered 24 months of IdentityForce protection.
Supply-chain cascadesreviewed and confirmed
- Massachusetts Mutual Life Insurance Company’s filing is one of at least 20 in the INFOSYS MCCAMISH SYSTEMS, LLC supply-chain incident (2024).
Subsidiary disclosures (8)filed by group companies
◈ These filings were made by or about subsidiaries of Massachusetts Mutual Life Insurance Company — not by Massachusetts Mutual Life Insurance Company itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.
- California State AGvia MassMutual Ascend Life Insurance Company2023-09-14
Pension Benefit Information (PBI), a third-party service provider for MassMutual Ascend, Annuity Investors, and Manhattan National Life Insurance, experienced a data breach via the MOVEit Transfer software vulnerability. An unauthorized third party accessed PBI's servers on May 29-30, 2023, and downloaded data including names, SSNs, DOBs, gender, zip codes, and policy numbers. PBI patched servers, investigated, and offered 24 months of credit monitoring via Kroll.
- Oregon State AGvia MassMutual Ascend Life Insurance Company2023-09-13
MassMutual Ascend Life Insurance Company reported a data breach to the Oregon Attorney General. The breach was reported on 2023-09-13. The breach occurred during 5/29/2023 - 5/30/2023. The breach was discovered on 5/31/2023. Notice was sent on 8/28/2023.
- Delaware State AGvia MassMutual Ascend Life Insurance Company2023-08-23
Pension Benefit Information (PBI), acting on behalf of MassMutual Ascend Life Insurance Company, Annuity Investors Life Insurance Company, and Manhattan National Life Insurance Company, notified individuals that a third-party software vulnerability in Progress Software's MOVEit Transfer was exploited. An unauthorized party accessed PBI's MOVEit server on May 29-30, 2023, and downloaded data including names, SSNs, dates of birth, gender, zip codes, and policy numbers. PBI patched servers, investigated the incident, and offered 24 months of credit monitoring via Kroll.
- Washington State AGvia MassMutual Ascend Life Insurance Company2023-08-10
Pension Benefit Information, LLC (PBI), a third-party vendor for MassMutual Ascend Life Insurance Company, disclosed a cybersecurity incident involving the MOVEit Transfer software vulnerability exploited by an unauthorized third party. The breach occurred May 29-30, 2023, and was discovered on May 31, 2023. Downloaded data included names, SSNs, DOBs, and policy numbers. PBI notified affected individuals and offered 24 months of credit monitoring.
- Massachusetts State AGvia MASSMUTUAL HOLDING LLC2018-02-21
MassMutual reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2018-02-21. 17 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGvia MASSMUTUAL HOLDING LLC2017-09-05
MassMutual reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2017-09-05. 35 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGvia MASSMUTUAL HOLDING LLC2017-05-30
MassMutual reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2017-05-30. 1 Massachusetts residents were affected. The report records the breach type as paper.
- Massachusetts State AGvia MASSMUTUAL HOLDING LLC2012-08-06
MassMutual reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2012-08-06. 1 Massachusetts residents were affected. The report records the breach type as electronic.