Eastern Bank Data Breach Lawsuit Investigation
On October 8, 2025, Eastern Bank notified the Massachusetts Attorney General of a security incident involving debit-card data associated with 116 customers. If you received a breach letter, you may be entitled to compensation and complimentary identity-protection support—request your free case evaluation today.
Download Official Breach Notice (PDF)Key Facts at a Glance
- Notice date: October 8, 2025
- Total individuals notified: 116
- States reported: Massachusetts
- Data exposed: Credit/debit card numbers tied to Eastern Bank Debit MasterCard BusinessCard® accounts
- Regulatory filing: Massachusetts Attorney General (File # 2025-1726)
What Happened?
According to Eastern Bank’s consumer notice, an unnamed merchant where customers used an Eastern Bank Debit MasterCard BusinessCard® experienced a security breach. The merchant has not provided additional details, but Eastern Bank determined that certain card numbers were at risk and proactively issued replacement cards.
What Information Was Involved?
The bank’s filing lists the following category of personal information:
- Credit/debit card numbers
No other data elements—such as PINs or Social Security numbers—were identified in the disclosure.
How Eastern Bank Responded
The notice states that Eastern Bank:
- Issued new debit cards to impacted customers
- Advised customers to activate the new card by the stated deadline, after which the old card would be automatically deactivated
- Instructed customers to update billers with the new card information
- Encouraged ongoing monitoring of accounts via online and mobile banking channels
Recommended Next Steps for Affected Customers
Eastern Bank recommends the following immediate actions:
- Activate your replacement debit card and securely destroy the old card.
- Update any recurring payment accounts with the new card number.
- Monitor all bank transactions and report suspicious activity to Eastern Bank right away. You can enroll in digital banking at easternbank.com.
If you suffered fraud-related losses, document charges, account closures, or time spent resolving issues—these records may support a future claim.
Who Is Affected?
The filing indicates 116 customers in Massachusetts were notified. Check whether your card ending in the digits referenced in your letter matches the potentially impacted card numbers.
Company Overview
Eastern Bank is a Boston-based financial institution founded in 1818.
- Headquarters: 265 Franklin Street, Boston, MA, USA
- Industry: Banking
- Employees: ~2,000
- Stock ticker: EBC (NASDAQ)
- Website: easternbank.com
- Support: Contact Us
- Privacy Policy: View Policy
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Frequently Asked Questions
How do I know if my Eastern Bank card was compromised?
You should have received a mailed notice identifying the last four digits of the affected Debit MasterCard BusinessCard®. If you are unsure, contact Eastern Bank immediately.
Is Eastern Bank offering credit monitoring?
The publicly filed notice does not reference complimentary credit-monitoring services. Customers are urged to monitor their accounts via online and mobile banking.
Can I join a class-action lawsuit against Eastern Bank?
Possibly. Individuals who incurred fraudulent charges, fees, or time losses may have claims. Use the form on this page for a no-cost legal evaluation.
What compensation could I receive?
Potential relief may include reimbursement of fraud losses, out-of-pocket expenses, and statutory damages where applicable. Exact amounts depend on the litigation outcome.
When did Eastern Bank discover the breach?
The notice does not specify the merchant’s breach date. Eastern Bank filed with the Massachusetts AG and issued letters on October 8, 2025.
Attorney Advertising. Prior results do not guarantee a similar outcome.