To overcome appsec challenges, financial institutions must balance speed and compliance while addressing unique risks such as cybercrime, compliance mandates, and data privacy concerns. Automation is crucial for streamlining compliance efforts, integrating continuous security testing and monitoring into the DevSecOps pipeline, and using developer-first security tools. AI-driven tools can accelerate threat detection, vulnerability management, and remediation processes but require a balanced approach with human oversight to handle new and high-risk vulnerabilities effectively. Equipping developers with the right security knowledge builds a strong security posture by investing in developer education and collaborating between security and development teams to embed security at every stage of the development process. A successful appsec strategy includes a well-defined risk management strategy, continuous monitoring, building a security-first culture, and clear communication across teams.