Mobile application security involves protecting mobile apps from threats and vulnerabilities that could compromise the confidentiality, integrity, and availability of data and services. It includes ensuring secure coding practices, implementing proper encryption, and applying authentication and authorization mechanisms to prevent unauthorized access. Additionally, security measures like secure data storage, safe communication protocols, and regular updates help safeguard against malware, data breaches, and other cyberattacks targeting mobile devices. As mobile apps often interact with sensitive personal information, securing them is crucial to maintaining user privacy and preventing exploitation.