> 99% of which still have the default password set.
Or the password is set but does not make much effect. On a printer we have here at work, I set the administrator password to prevent people from accidentally changing the settings. Imagine my surprise when I found out the settings had changed anyway.
It seems that, when installing the Windows driver for that printer, it has a wizard to set up the printer (configuring the fax settings and a few other things). That wizard seemed to completely ignore the administrator password I had set on the web interface.