I’m under attack mode is an advanced security level in Hostinger Content Delivery Network. It enables the browser challenge page for your website visitors, which helps fight DDoS attacks.

To use this, first, make sure that you have enabled Hostinger CDN for your site.

In your Hostinger account, go to the Websites section, find your website, and click on Manage next to it. Then, in the sidebar, search for CDN and click on it:

Make sure the CDN is active – if not, enable it – and click on the arrow ❯ button to access more settings:

Finally, go to the Security tab and toggle the button next to I'm under attack to enable it:

Now, once anyone attempts to access your website online, they'll see a page with a note saying Checking your browser before accessing. Just a moment...:

And that's it!