Vibe Coding Security Checklist: 12 Checks Before You Launch
Updated September 24, 2026 · VibeCoder U by FlowState AI
Before launching a vibe-coded app, confirm that secret keys never appear in page code, every form and permission is checked on the server, logins are rate-limited, the site uses HTTPS, payments are confirmed only by verified webhooks, card numbers never touch your servers, and backups are running. AI builders don't do these automatically, so test each one yourself.
The 12 checks
- 1. Secret keys stay on the server. Search your page source for your API keys. None should appear. Only publishable keys meant for browsers (like Stripe's publishable key) may be public.
- 2. Every form is validated on the server. Browser checks are for convenience. The server must reject bad input too.
- 3. Permissions are enforced on the server. Hiding a button isn't security. Log in as a regular user and try to open an admin address directly. You should be blocked.
- 4. Passwords are handled by a proper login system. Passwords must be stored hashed, never as plain text. Use your platform's built-in authentication or a well-known auth provider.
- 5. Logins and forms are rate-limited. Repeated wrong passwords should slow down or lock out, so no one can guess endlessly.
- 6. The site uses HTTPS everywhere. Look for the padlock on every page.
- 7. Payments are confirmed only by verified webhooks. Never mark an order paid because someone reached a thank-you page. Verify the payment provider's webhook signature on the server.
- 8. Card numbers never touch your servers. Use hosted payment pages like Stripe Checkout or Payment Links.
- 9. Error messages don't leak details. Users should see a friendly message, not code, file paths or database errors.
- 10. Backups run automatically, and you've tested a restore.
- 11. Admin accounts are limited. Only the people who need admin access have it, and each person has their own login.
- 12. A privacy policy explains what you collect. It must match what the app actually does.
Prompt to run a security pass
Review this whole app for security before launch. Check: (1) no secret keys anywhere in browser code, (2) server-side validation on every form, (3) permissions enforced on the server for every page and action, (4) passwords stored hashed by a proper auth system, (5) rate limiting on login and forms, (6) HTTPS only, (7) payments confirmed only by verified webhooks, (8) no card data stored, (9) friendly error messages that don't leak details. List every problem you find and fix them one at a time, telling me how to test each fix.
When to bring in a professional
If the app handles health information, financial data, children's data or anything regulated, have a qualified security professional review it before launch. Security is part of every VibeCoder U blueprint and the Launch Checklist.
Questions people ask
Is AI-generated code secure?
Not automatically. AI builders can produce working code with security gaps, such as permissions that are only enforced in the browser or keys exposed in page code. Review and test every item on a security checklist before launch.
What's the most common security mistake in vibe-coded apps?
Relying on the browser for things only the server can enforce, like hiding admin buttons instead of blocking admin actions on the server, or putting secret API keys in page code.
Do I need a security audit?
For apps with sensitive or regulated data, yes. Have a qualified professional review them. For simpler apps, a careful checklist review plus testing as a logged-out and a regular user catches many common problems.
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