FINRA, or the Financial Industry Regulatory Authority, is a self-regulatory organization that oversees brokerage firms and exchange markets in the United States. Its primary mission is to protect investors by ensuring the securities industry operates fairly and honestly. FINRA establishes rules and regulations for brokers and brokerage firms, conducts regular examinations, and enforces compliance with federal securities laws. It also provides education to investors and maintains a database of registered securities professionals. In cybersecurity, FINRA issues guidance and requirements for member firms to safeguard customer data, respond to cyber threats, and report incidents, helping to maintain trust and stability in financial markets.