MainStreet Bancshares

MainStreet Bancshares,which also operates under the name MainStreet Bank, is a financial institution headquartered in the United States of America. The organization provides banking services to its customer base. It functions within the U.S. banking industry and is subject to federal and state regulatory oversight. Its services are delivered to individuals and businesses that maintain accounts with the institution. As a bank, it maintains relationships with various service providers to support its operations.

In March 2025, MainStreet Bancshares experienced a cybersecurity incident involving a compromised third-party vendor that exposed personally identifiable information for approximately five percent of its customer base. The bank’s own systems were not breached, and no unauthorized transactions or loss of customer funds were reported. Following the discovery, the company terminated its relationship with the vendor, notified relevant regulators and affected customers, and provided monitoring tools. The incident was determined not to have materially affected the bank’s operations, financial condition, or ability to process customer transactions. This event highlights the organization’s reliance on external vendors and its response procedures for third‑party data exposures.