Could you please describe the issue in more detail? Your screenshot shows a McAfee website in the background (or a website that looks like a McAfee site) and a dialog in front. It's a screenshot of your website that is hosted on the server. This is not linked to phpMyAdmin in any way. It is also quite strange, because unless you are McAfee it is not likely that you have their content in your website. Maybe your website was hacked to impersonate their website and trick users into downloading files?