data-sanitization

Full Stack Developers handle user input validation and data sanitization by implementing various techniques and best practices. They ensure that user input is validated and sanitized on both the client-side and server-side to prevent security vulnerabilities and data integrity issues. This involves using validations rules, regular expressions, and security measures to filter and sanitize data. By following these practices, Full Stack Developers can protect against cross-site scripting (XSS) attacks, SQL injections, and other security risks.