Why Frontend Security Matters?
You might think backend is where security lives.
But truth is—most backend breaches start in the frontend.
🔐 Challenge #1: Fix Leaky Token Storage
Problem:
Your React app stores access tokens in localStorage.
Fix:
✅ Use HttpOnly secure cookies
❌ Never expose tokens to JS or extensions
💡 Bonus: Rotate tokens securely
🔍 Challenge #2: Input Validation
Problem:
User input from forms is sent directly to APIs.
Fix:
✅ Validate input on frontend AND backend
✅ Escape special characters
✅ Use a schema validator like zod or yup
🌍 Challenge #3: Lock Down CORS
Problem:
Your frontend is served from any origin.
Your API allows Access-Control-Allow-Origin: *
Fix:
✅ Only allow specific trusted origins
✅ Block credentials from being shared
🛡️ Start fixing frontend risks before they hit your backend:
👉 Frontend Security Checklist
