What are the best practices for data validation and input sanitization in web application development?
Data validation and input sanitization are crucial aspects of web application development to ensure the security and integrity of user input. Some best practices include input validation, data type validation, parameterized queries, output encoding, and regular updates and patching of frameworks and libraries. It is essential to implement server-side validation, client-side validation, and secure coding practices to prevent common vulnerabilities such as SQL injection, cross-site scripting (XSS), and command injection attacks.