Modify your .htaccess file to prevent other domains from displaying your website via iframe or proxy.

Add this to your .htaccess file:

# Block iframe embedding
Header set X-Frame-Options "SAMEORIGIN"

# Prevent other domains from proxying your site
RewriteEngine On
RewriteCond %{HTTP_HOST} !^(yourwebsite\.com|www\.yourwebsite\.com)$ [NC]
RewriteRule ^(.*)$ - [F,L]

Replace yourwebsite.com with your actual domain.

This blocks unauthorized access while allowing normal visitors.