"Security " ==>>virtualbox <<== Linux VS Windows

Users who are considering making a change from Windows to Linux or Linux to Windows commonly want to know the advantages and disadvantages of each of the operating systems. Below is a chart to help illustrate the major advantages and disadvantages of each of these operating systems.

Security

Linux is a highly secure operating system. Although attack vectors are still discovered, its source code is open and available for any user to review, which makes it easier to identify and repair vulnerabilities.

Microsoft has made great security improvements over the years. But as the operating system with the largest user base, especially among novice computer users, it is the primary target for malicious coders. As a result, of all major operating systems, Microsoft Windows is the most likely to be the victim of viruses and malware.
Linux :-

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Linux (lee'nuhks/ or /li'nuks/,not/li:'nuhks) is a free and open-source operating system first developed by Linus Torvalds and friends that was first announced August 25, 1991. The Linux kernel runs on numerous different platforms including the Intel and Alpha platform and is available under the GNU General Public License.
The system can be distributed, used, and expanded free of charge. In this way, developers have access to all the source codes, thus being able to integrate new functions or to find and eliminate programming bugs quickly. Thereby drivers for new adapters (SCSI controller, graphics cards, etc.) can be integrated very rapidly.
Where is Linux used?

Presently, Linux is successfully being used by several millions of users worldwide. The composition of users varies from private users, training companies, universities, research centers, and companies. Below are some examples of where Linux is used today.
Android phones and tablets - Android phones and tablets use a form of Linux.
Servers - A vast majority of the web servers that run many web pages (including this one) are using Linux.
TV, Cameras, DVD players, etc. - Most of the appliances that use some form of a computer use Linux.
Amazon - Many of the computers that help run Amazon use Linux.
Google - Computers that help run Google and Google search results use Linux.
Planes - Airplanes computers and screens you watch on the plane use Linux.
U.S. Postal service - The computers and servers that help run systems to sort and manage mail in the U.S.
NYSE - The New York Stock Exchange uses Linux to help run its exchange.
LHC - The Large Hadron Collider is using Linux.
OLPC - The One Laptop Per Child program used Linux on all of its computers
Who makes Linux now?

Thousands of organizations, corporations, and individuals help develop Linux and each of its various distributions. For more information, visit LinuxFoundation.org. You can read what's happening right now in Linux development at LKML.org, the Linux kernel mailing list.
Linux distributions, flavors, and variants

Linux may be obtained in two different ways. All the necessary components can be downloaded free of charge from the Internet, which means an operating system can be assembled for almost nothing. An alternative is to use a so-called distribution, which is a Linux variation offered by many companies. They include a broad range of applications and full programs that significantly simplify the installation of Linux.
There are hundreds of different distributions of Linux that have been released. Below are just a few that we currently have listed on our site. A great site that lists almost every distribution, as well as rankings is DistroWatch.

Use Cases

Linux is used by corporate, scientific, and academic organizations of every size. It's used to power the development machines and servers at Google, Facebook, Twitter, NASA, and the New York Stock Exchange, just to name a few. On the desktop, it is used by technically proficient users who prioritize system security and reliability, and by enthusiasts who want to learn more about computers and how they work. It's also used to give new life to older hardware, enable low-budget computing projects to succeed, and serve as the operating system on single-board computers such as the Raspberry Pi.

Microsoft Windows is usually the operating system of choice for gamers, novice users, and business users who rely on Microsoft software. It doesn't run well on older hardware, however. Many Windows users are thrilled with the changes that Microsoft has introduced with Windows 10, so if you've never used it, now is a great time to try it out.

Software Cost

Many of the available software programs, utilities, and games available on Linux are free and open source. Even complex applications such as GIMP, Open Office, and Star Office are available for free.

=> Although there are many free Windows programs, utilities, and games, the majority of the programs are commercial.