Banner Capital Bank experienced an external system breach, specifically a hacking incident, between August 20, 2025, and September 11, 2025. The bank discovered this breach on February 20, 2026. Official notification to consumers began on March 6, 2026, with a filing to the Maine Attorney General in March 2026. The bank stated that it has taken steps to secure the affected account and is implementing additional security measures.
The incident involved names, financial account numbers, and potentially Social Security numbers. The bank has not publicly disclosed the exact number of individuals affected, although two Maine residents were impacted. It has confirmed that the incident did not involve access to other bank systems, customer account balances, or fund transfers.
Details about data breaches can emerge over time, and notification processes may be delayed.