Since CGI is a powerfull for webprogramming.
The mirrorside of CGI is very danger.

virtualhost User on same server can write CGI program read other user source code, DB and ...


How to protect this case.

--Admin--

Thank for for linux permissions.

Some basic command is using "chown" to assign a file to a certain user name and group name.

A user called B would not be able to open a file with A assigned as the username.

Use with Apache the program suEXEC.