Web Security: Common Vulnerabilities And Their Mitigation - XSS mitigation and prevention

The video tutorial discusses cross-site scripting (XSS) threats, emphasizing the importance of treating all user input as potentially malicious. It covers various contexts where user input can be applied, such as HTML, CSS, and JavaScript, and explains the need for context-specific sanitization and validation. The tutorial also explores the timing of input sanitization, whether at the point of receipt or rendering, and compares client-side and server-side validation, highlighting the necessity of server-side validation for comprehensive security.

What are the advantages of sanitizing user input as soon as it is received?

When should input be sanitized and validated according to the text?

Describe a scenario where client-based validation is necessary.

What is the significance of server-based validation in web applications?