Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only! Grab it Learn essential techniques for securing web applications through comprehensive form validation and data sanitization in this detailed technical video. Master both client-side validation using JavaScript and server-side validation using Python to create robust security layers for web forms. Explore methods for implementing email address verification, name validation, and URL checking while preventing injection attacks and data corruption. Discover how to dynamically update form interfaces to provide real-time user feedback, implement preventive measures against invalid data submission, and properly sanitize input by removing potentially harmful HTML formatting and escape characters. Gain practical knowledge about creating multi-layered security processes that protect your systems from compromised or garbage data, ensuring your databases maintain clean, properly formatted information.