Choosing an correct Operating System is very much important with respect to for what purpose you are going to use it. There are many OS or System Software's available in the market. But Windows, Linux and MAC; these three are of the most popularly used whether for a server or for a personal computer.
Microsoft Windows, we all know the great Graphical User Interface (GUI) based system that makes our job faster with just a click. Microsoft windows is still dominating the Personal Computer users.
In case of Linux, it is the free and open-source software operating system based on Unix. Linux is very popularly packaged in a form called Linux Distribution (Distro) which is used for both desktop and server. Linux is basically made for personal computers. Currently Linux is the worlds leading operating system for servers and mainframe computers.
Android which is one of the most popular OS for smartphones is based on Linux Kernal.
MAC or Macintosh operating system developed by Apple Inc. is a graphical user interface based Operating System which is mainly designed for Macintosh series personal computers. It was developed in 1984 which was compatible with third-party systems.
Which Operating System (OS) is best for Security?
If you compare between these three (Windows, Linux and MAC) you will get Linux as the more secured one. Ok let's go through it.
User Privileges
The main advantage of using Linux is the distribution of user privileges in the system.
Linux users does not have the superpower to do whatever it can. And the superpower is given to only the "root". So if a virus wants to be installed in a Linux system; a general user will not be able to permit it. And it may can damage that users local file and programs but cannot damage or change anything system-wide.
But in windows users are given the administrator privilege which can harm the system anytime.
Monoculture Effect
Generally a diversity in the IT world will always help to protect their users.
But Windows OS runs in a Monoculture environment and there is no variety of choices for the users.
But thank to god that there are many platform available in Linux. There are distribution like; Ubuntu, Debian, Gentoo and others. And the beauty is they are all open source.
Strong Community of Developers
OS like; Windows and MAC are basically developed by their paid developers. So whatever security flaws are there an only be caught by those limited number of developers only. But in Linux there are countless number of developers who are trying 24X7 to fix problems associated with a Linux distribution. Not even this, a user also can fix and repair bugs that present in a Linux Distribution.
Number of Users
Some overly crowded OS like; MAC or Windows makes the system less secure than a Linux operating system which has less number of users.