Anderson Bancshares Customers Impacted by Marquis Data Breach

On Nov. 4, 2025, Anderson Bancshares Inc., the parent company of Anderson Brothers Bank, discovered that a data breach had compromised the personal information of thousands of its customers. The incident was traced to a third-party vendor, Marquis Software Solutions, which provides digital and physical marketing and communications services for the bank.

According to the company’s disclosure to the Maine Attorney General, an unauthorized party gained access to Marquis’ systems as early as Aug. 14, 2025, exposing sensitive customer information.

The breach did not involve Anderson Brothers Bank’s own internal systems. Instead, the unauthorized access occurred solely within Marquis’ environment. Marquis informed Anderson Bancshares Inc. of the incident on Oct. 28, 2025, after conducting an internal investigation. As a result, Anderson Bancshares Inc. only recently learned that their customer information may have been impacted.

The information exposed in this breach included names, dates of birth, Social Security numbers and financial account information.

In total, 3,272 individuals in the United States were affected by this breach, including one resident of Maine. The company began notifying affected consumers in writing on Dec. 5, 2025. For more details, the official breach notification is available on the Maine Attorney General’s data breach portal.

Anderson Bancshares' response

As a precaution, the company is offering one year of complimentary credit monitoring and identity protection services through Epiq to those whose information was potentially exposed. Impacted individuals are encouraged to enroll in these services and to remain vigilant by monitoring their account statements and credit reports for any suspicious activity over the next 12 to 24 months.

The company’s notification letters include detailed guidance on protecting against identity theft and fraud, such as placing fraud alerts or security freezes on credit files and contacting the three major credit bureaus. Affected customers are also advised to report any suspected incidents of identity theft or fraud to their financial institutions, law enforcement and the Federal Trade Commission.