[cmstheme]

I think you're concerned is the username that was displayed in the error message.

As far as I know the username is already known to everyone - I guess this is setup that way for a shared account. For example, when you guess for the username at pligg.com, it should be "pligg" and for digg.com, it should be "digg" unless it is setup in a different way.

In Web Host Manager (WHM), when I create a new account for my client, I just used the WHM's suggestion for username. For example, when I setup a new hosting account for the domain abcdefghijk.com, it suggest to use "abcdefgh" as the username and I just use it. WHM suggestions is to use the first 8 character of the domain name as the username and I think when your web host create an account, they will also used the WHM's suggestion to avoid confusions later. Of course, your host can customize your username but I gues they're just using the default - which is suggested by WHM.

So I guess it's just fine that your username is displayed in public. Just use strong password, use secure connection when accessing cPanel/Webmail, use SFTP (this is the secure one) instead of FTP, etc.

And my experienced with a shared account is that, the staff at your host have access to your cPanel, etc. They login as "root" in WHM and then they enter your own cPanel from there, as a super user. This happened when I asked a support in my shared account. I was expecting that I will be given instructions but then the staff is already navigating to each of my folder and place there a file for the fix of the issue I raised.

Thus, this is not all about Pligg, but also or totally about the host.