The Botnet Filter has a default message that is displayed when a page is blocked. You can customize this message and include your own logo.
To create a custom message and include a custom logo
Ensure the Include Botnet Filter Block Details option is selected. This option is selected by default.
When enabled, this option shows block details such as reason for the block, IP address, and country. When disabled, this option hides all information.
Optionally, in the Base64-encoded Logo Icon field, you can specify a Base 64-encoded GIF icon to be displayed as well.
Ensure the icon is valid and make the size as small as possible. The recommended size is 400 x 65 pixels.