Application security is the practice of designing, developing, and maintaining secure applications. It involves implementing various measures to protect applications from external threats, such as cyber-attacks, as well as internal threats, such as insider threats or data leaks. Application security includes a wide range of activities, such as secure coding practices, vulnerability assessments and penetration testing, threat modeling, and security testing. It also involves implementing security controls and safeguards within the application itself, such as authentication and authorization mechanisms, access controls, and data encryption. Effective application security is essential for protecting sensitive data and maintaining the integrity and availability of applications. It is an important aspect of overall cybersecurity and can help organizations to meet regulatory compliance requirements and reduce the risk of data breaches and other security incidents.