Key considerations in mobile application security include not just protecting sensitive data but also ensuring compliance with regulations. Developers must implement encryption, secure APIs, and authentication mechanisms to safeguard user information. Data storage practices must also adhere to best practices to minimize vulnerabilities. Regular updates are essential for patching security flaws and addressing emerging threats. Moreover, developers should conduct penetration testing to identify weaknesses before deployment. User education on safe app usage is also critical, as human error often represents a significant security risk in mobile environments.