Hello!
Why not put an .htaccess with Password in /admin?

In the end it's hard to "hide" websitebaker.
The combination of modules, templates and the way the SourceCode is generated anybody that is familiar with WB can guess each WB installation, because it's quite unique.
Just make a yourdomain.xyz/modules/show_menu2/README.de.txt or choose another one.

Yours Michael