Massachusetts Mutual Life Insurance Company

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.

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.

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.

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.

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 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.

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 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.

Massachusetts Mutual Life Insurance Company reported a ransomware incident involving third-party provider Infosys McCamish Systems (IMS) on November 2, 2023. The breach affected 39 Idaho residents, exposing names, Social Security numbers, dates of birth, and addresses. IMS engaged Unit 42 and EY for investigation and remediation. No evidence of data misuse was found, but 24 months of Experian IdentityForce was offered to affected individuals.

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 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.

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.

Massachusetts Mutual Life Insurance Company reported a data breach to the Montana Attorney General. The breach was reported on 2023-04-27. The breach occurred on 2/1/2023. 1 Montana residents were affected.

Massachusetts Mutual Life Insurance Company (MassMutual) reported a data breach to the Montana Attorney General. The breach was reported on 2019-06-04. The breach occurred on 5/20/2019. 1 Montana residents were affected.

Massachusetts Mutual Life Insurance Company notified individuals of unauthorized access to business systems via compromised agent credentials. An unknown perpetrator used social engineering to reset credentials for two agents, gaining access to client PII including names, SSNs, and account numbers. MassMutual reset credentials, notified law enforcement, and offered two years of credit monitoring.

Massachusetts Mutual Life Insurance Company (MassMutual) disclosed an incident on December 3, 2013, where a retirement services account manager inadvertently sent a secure email containing personal identifying information (name, address, date of birth, SSN, retirement plan details) to an incorrect MassMutual client. The recipient confirmed deletion of the data. MassMutual offered two years of credit monitoring to the affected individual.

Massachusetts Mutual Life Insurance Company notified the New Hampshire Attorney General on December 16, 2013, regarding an inadvertent disclosure of personal information affecting 168 New Hampshire residents. The incident involved the unauthorized sharing of personal data, classified as an error/misdelivery. No specific discovery date or financial impact was disclosed.

Massachusetts Mutual Life Insurance Company reported a data breach to the California Attorney General on September 13, 2013. The filing indicates the breach occurred on September 13, 2013. The attached notice samples suggest that Social Security Numbers and basic identity information were potentially compromised. No specific attack vector, affected count, or discovery date is provided in the public filing summary.

Massachusetts Mutual Life Insurance Company inadvertently disclosed customer 401(k) retirement plan information, including names, Social Security numbers, investment elections, and account balances, to an unaffiliated third-party retirement plan service provider via email on May 8, 2013. The third party notified MassMutual and deleted the data. MassMutual offered two years of credit monitoring.

Massachusetts Mutual Life Insurance Company notified California residents that their IRS Form 1099s were mailed to incorrect addresses due to an error by third-party vendor Convey Compliance Systems, Inc. The incident occurred on January 30, 2013, and was discovered on February 1, 2013. Affected data included names, addresses, Social Security Numbers, and financial information. MassMutual offered two years of credit monitoring.

Massachusetts Mutual Life Insurance Company (MassMutual) inadvertently sent a report containing personal information (name, SSN, 401(k) balance) via secure email to the Plan Sponsor of another retirement plan on July 13, 2012. The recipient immediately notified MassMutual and deleted the information. MassMutual investigated and determined no misuse occurred. Affected individuals were offered two years of Equifax Credit Watch.