Passwords are the sole criteria of system Security for most of the System. And when it comes to Linux, if you know the root password you owns the machine. Passwords are as a Security measure for BIOS, Login, Disk, Application, etc.
Linux is considered to be the most Secure Operating System to be hacked or cracked and in reality it is, still we will be discussing some of the loop-holes and exploits of a Linux System. We will be using CentOS Linux throughout the article as an article to crack our own machine’s security.