Courses / Frontend Security & Observability
4. Secure default headers
Setting up recommended HTTP headers (Referrer-Policy, X-Frame-Options basics) for frontend apps.
JavaScript
Secure default headers
HTTP response headers set by frontends or edge/server code to reduce information leakage and UI injection risks.
"I want my app to refuse being framed and stop leaking URLs to other sites by default."
Secure default headers are conservative HTTP header values (e.g., Referrer-Policy, X-Frame-Options) applied by frontend servers or edge functions to limit referrer data and prevent clickjacking unless explicitly allowed.
"I want my app to refuse being framed and stop leaking URLs to other sites by default."
Secure default headers are conservative HTTP header values (e.g., Referrer-Policy, X-Frame-Options) applied by frontend servers or edge functions to limit referrer data and prevent clickjacking unless explicitly allowed.