🧠 Vibe Coding with AI? Don't Forget These Frontend Security Fundamentals

AI is changing how we write frontend code.

We autocomplete faster, generate entire UI components, even build APIs with a prompt.

But while you're shipping faster, are you securing smarter?

Here’s a Frontend Security Cheatsheet designed for modern devs coding with AI assistants (Copilot, GPT, etc).

🔐 JWT (JSON Web Token) Security Tips

Your Copilot might scaffold token handling fast, but make sure you:

  • Never store JWTs in localStorage
  • Prefer HttpOnly, Secure cookies
  • Always verify token on backend
  • Rotate access tokens + secrets periodically
  • Set short-lived access tokens with refresh strategies

⚠️ Many AI suggestions use insecure defaults. Double-check token logic.

🧼 Preventing XSS (Cross-Site Scripting)

LLMs love dangerouslySetInnerHTML, but you shouldn’t.

  • Always sanitize user input (DOMPurify)
  • Escape dynamic content in your components
  • Use strong CSP headers
  • Never blindly trust what comes from GPT-generated data injection

🧨 Prevent SQLi via your UI

It’s a backend issue — but your frontend may accidentally leak patterns.

  • Sanitize form data before send
  • Validate with zod/yup before fetch
  • Never expose raw queries or GraphQL playgrounds to public users
  • Use enums and schemas, not raw strings

🧷 CSRF Prevention Essentials

If your Copilot-built backend uses cookie-based auth:

  • Always use SameSite=Strict or Lax
  • Prefer token-based auth via Authorization headers
  • Use CSRF tokens for sensitive forms
  • Don’t trust origin headers unless validated

🛡️ Secure API Design with AI Tools

  • Validate data on both ends
  • Use role-based access control (RBAC)
  • Rate-limit endpoints — especially AI-enhanced features
  • Use HTTPS + proper CORS configuration
  • Never expose admin tools via public routes

🧠 AI scaffolds APIs quickly — but securing them takes conscious review.

✨ Bonus: Vibe Coding ≠ Secure Coding

Your GPT might build the login system —

But it’s your job to think like an attacker.

🎁 Want to go deeper?

I’ve built a complete eBook + Snippet Repo for AI-enhanced coding teams.

It’s packed with examples, cheatsheets, and modern security best practices — for both frontend & backend.

👉 https://uigerhana.gumroad.com/l/vibe-coding-security

Perfect for:

  • Web devs coding with Copilot / GPT
  • Teams using AI tools to scaffold their apps
  • Frontend engineers who care about real-world security

Let’s build cool stuff — and keep it safe.

Let me know what security holes you've seen from AI-generated code 👇