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🔐 CSRF Token Explained: How to Secure Your Frontend (React/Next.js) and Backend (Django/Laravel)
“If you’re building modern web apps and not handling CSRF tokens properly, you’re building insecure apps with a smile.” — Every security expert ever.
🤔 What is CSRF?
CSRF (Cross-Site Request Forgery) is a security vulnerability where a malicious site tricks a logged-in user’s browser into sending unintended requests to your server.
Example:
Imagine you’re logged into bank.com, and you visit evil.com. Without your knowledge, evil.com sends a POST request to bank.com/transfer using your active session. Boom 💥 — money transferred without consent!
🛡️ CSRF Token to the Rescue!
A CSRF token is a secret value that the server generates and embeds in pages/forms. The client (usually frontend) must send it back in every state-changing request (like POST/PUT/DELETE). The server then verifies this token to confirm the request came from a trusted source.
