This white paper outlines the security challenges associated with mobile applications and APIs, emphasizing the vulnerabilities that arise from their interaction. It introduces a mobile threat model that categorizes the attack surfaces into five key areas: user credentials, app integrity, device integrity, API channel integrity, and API and service vulnerabilities. The document details how bad actors exploit these surfaces to access sensitive data and disrupt services. It discusses the importance of penetration testing to identify and manage vulnerabilities effectively. The paper also references established frameworks such as OWASP, which provides guidelines for mobile application security. Specific attack vectors, such as credential theft and app manipulation, are examined, highlighting the need for robust security measures. The conclusion stresses the necessity of enhancing protection and testing strategies to safeguard mobile applications and APIs against sophisticated automated attacks.