Essential Security Headers: HSTS, X-Frame-Options, and Referrer-Policy
Configure HTTP response headers in NGINX, Apache, and Express.js to guard against clickjacking and SSL downgrade attacks.
Mitigating Clickjacking & Downgrades
Deploy Strict-Transport-Security (HSTS) with preload flags and set X-Frame-Options to DENY or SAMEORIGIN to prevent iframe clickjacking.