The situation becomes even more dangerous when the suid/sgid programs are poorly written. e.g when suid programs are written, then at the run time the privileges are elevated. Now, if the programmer forgets to drop the privileges then the root privileges are retained by the program.
Linux Security is greatly enhanced if authentication to the system is well under control. PAM plays a great role in this process. PAM expands to Pluggable Authentication Modules. I promise to explain PAM in as easy manner as I can. Just be ready to read forwards and you are done. Since the blog is tightly focussed on security of unix based system, so I assume the general basic knowledge of unix based operating systems.
Linux Systems Security is growing concern. Here I’ve listed few measures to be taken for securing the linux systems. Ganesh Dutt Shama: World is Welcome To The World of Security!!!