Cleaning up a hacked server is a nightmare. Yet, defacement and hacked accounts is something hosters battle on a daily basis. Beyond taking your webmaster's time, it also tarnishes your company image and causes customers to leave in droves. The main reason hacking is so easy on shared hosting servers is because Linux was never meant to be used by a large number of not vetted users. It is too easy for a hacker to obtain an account on your server (by using a stolen credit card and signing up or by abusing some outdated script one of your customers has not updated for years). After that, a hacker has inside access to the server and can begin poking around, finding low hanging fruit and hacking your server.
CloudLinux stops that. With our Greenix360 CageFS and SecureLinks technologies, users are virtualized to their own file systems, preventing any individual user from seeing any other users on the server.
Beyond that Greenix360 hosting withCloud Linux, we:
Allow access only to safe files;
Remove access to ALL SUID scripts;
Limit access to /proc filesystem;
Prevent symbolic links attacks;
Customers can see only his or her own processes.
All that without the need for you to change your scripts or to adjust anything at all. CageFS is completely transparent for the end user, yet impregnable to a hacker.
