Seonglae Choprocess of securing a system by reducing its surface of vulnerability
There are various methods of hardening Unix and Linux systems
Binary hardening is a security technique in which binary files are analyzed and modified to protect against common exploits
Hardening (computing) - Wikipedia
In computing, hardening is usually the process of securing a system by reducing its surface of vulnerability, which is larger when a system performs more functions; in principle a single-function system is more secure than a multipurpose one.
https://en.wikipedia.org/wiki/Hardening_(computing)
