MassMutual Files Indiana Data Breach Notice After April 2025 Incident

Massachusetts Mutual Life Insurance Company (MassMutual) filed a data breach notification with Indiana regulators on February 13, 2026, following a security incident that occurred on April 7, 2025. This filing indicates that personal information, including Full Name, Social Security Number, and Financial Account Number, may have been exposed to unauthorized parties. Individuals who receive a notification from MassMutual should review it carefully to understand the specific data involved.

State: Indiana
Breach date: April 7, 2025
Reported: February 13, 2026

What may have been exposed

Full Name
Social Security Number
Date of Birth
Financial Account Number
Routing Number
Policy Number
Credit Score Information
Transaction History
Mailing Address
Beneficiary Information

Massachusetts Mutual Life Insurance Company (MassMutual) has reported a data security incident to the Indiana Attorney General. The company filed its official notification on February 13, 2026, concerning an unspecified security event that took place on April 7, 2025. This filing serves to inform Indiana residents about the exposure of their personal information.

The types of data reportedly involved in this incident include Full Name, Social Security Number, Date of Birth, Financial Account Number, Routing Number, Policy Number, Credit Score Information, Transaction History, Mailing Address, and Beneficiary Information. The specific scope of affected individuals has not been publicly specified in the filing.

Exposure of such sensitive data categories carries potential risks, including identity theft and financial fraud. Individuals whose Social Security Number, financial details, or policy information are compromised may face a higher risk of unauthorized account access, fraudulent transactions, or attempts to open new lines of credit in their name.

To help mitigate potential risks, individuals are advised to remain vigilant. Regularly review financial statements and credit reports for any suspicious activity. Consider placing a fraud alert or security freeze on your credit files with the three major credit bureaus (Equifax, Experian, and TransUnion).

If you receive a notification letter from Massachusetts Mutual Life Insurance Company regarding this incident, it is important to follow any guidance provided within that communication. This information is derived from public data breach filings made with state regulatory bodies.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

Freeze your credit
Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.
Watch your financial accounts
Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Source: Indiana Attorney General filing

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