Skas UML security

[-wassup-]

i am interested in getting a vserver that uses Skas UML. now i was wondering about its security. since the vserver is a single file the root user on the main admin box can not access it? is that correct? also does anyone know what way someone could access it even if they were an admin on the host computer? wouldnt techniques like sniffing data on the box, injecting into the file. how about something like reading the vserver file the way the Skas UML reads it? i think all these attacks are theoretically possible but would require a lot of skill to be carried out.