Mobile app security is a top priority as the number of attacks and vulnerabilities continues to rise in 2024. Common security challenges include data breaches, insecure storage, insufficient encryption, and vulnerabilities in third-party libraries. Developers must adopt a security-first approach by implementing end-to-end encryption, using secure authentication methods such as multi-factor authentication (MFA), and ensuring that sensitive data is never stored in plain text. Regular code audits, security testing, and using tools like OWASP Mobile Security Testing Guide (MSTG) can help identify potential weaknesses. Additionally, using secure communication channels like HTTPS and WebSockets and keeping dependencies up to date can prevent attacks stemming from outdated or vulnerable libraries.