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.