Day 1: Introduction to Web Security and XSS Prevention

Session 1: Understanding Frontend Security Threats

• What is frontend security, and why does it matter?
• Overview of OWASP Top 10 security vulnerabilities
• Understanding attack surfaces in web applications

Session 2: Preventing Cross-Site Scripting (XSS) Attacks

• Understanding stored, reflected, and DOM-based XSS
• Best practices for sanitizing and escaping user input
• Using CSP (Content Security Policy) to prevent XSS

Session 3: Hands-on Lab – Identifying and Fixing XSS Vulnerabilities

• Implementing secure input validation
• Writing secure JavaScript code to prevent XSS

Day 2: CSRF, Clickjacking, and Secure Authentication

Session 1: Cross-Site Request Forgery (CSRF) Protection

• Understanding how CSRF attacks work
• Implementing CSRF tokens in web applications
• Using same-site cookies and secure authentication

Session 2: Clickjacking and Secure Headers

• How Clickjacking works and how to prevent it
• Implementing X-Frame-Options and sandboxing iframes
• Using security headers (CSP, HSTS, X-Content-Type-Options)

Session 3: Hands-on Lab – Implementing Secure Authentication and CSRF Protection

• Securing login forms with CSRF protection
• Implementing security headers to prevent UI-based attacks

Day 3: Secure API Communication and Advanced Protection

Session 1: Cross-Origin Resource Sharing (CORS) and Secure API Calls

• Understanding CORS and its security implications
• Implementing secure CORS policies for frontend-backend communication
• Preventing CORS misconfigurations and data exposure

Session 2: Secure Storage and Data Protection

• Handling JWT securely in local storage and cookies
• Best practices for encrypting sensitive frontend data
• Preventing session hijacking and replay attacks

Session 3: Hands-on Lab – Securing a Web Application from Multiple Threats

• Identifying and fixing security vulnerabilities in a sample web app
• Implementing secure authentication, input validation, and API protection