Monson Savings Bank Data Breach Notice (Massachusetts Attorney General)

The filing from Monson Savings Bank, submitted to the Massachusetts Attorney General on July 14, 2026, states that financial account numbers belonging to 7,783 people were exposed. No other categories of information appear in the record.

Financial account numbers do not expire

Unlike a credit card that can be replaced with a new number, these account details remain tied to the same underlying accounts indefinitely. If the numbers have left the bank’s control, they can be used for fraudulent transactions, unauthorized transfers, or attempts at account takeover. This is the central risk created by the incident.

The record does not list Social Security numbers, dates of birth, addresses, or any government identifiers. It also contains no passwords or login credentials. That absence is meaningful: there is no evidence that anyone can log directly into your online banking using data from this filing.

What this exposure actually enables

With only an account number, a determined person still needs additional information to move money successfully. Many banks require matching account holder name, routing number, or secondary verification such as a PIN, security questions, or device approval. However, the account number alone is often enough to initiate fraudulent ACH transfers, set up fake payment requests, or impersonate you when speaking to customer service.