Operating systems have security as well. An operating system serves to set security, since it is a platforms that interacts with a lot of users and information. This is how easily you can implement security to your Operating System.
First, passwords. For passwords we can use three things to create them: what we know, what we have and what we are.
- What we know are things or words that we keep in our heads.
- What we have could be material things we own, some examples are credentials or tags, which we have already used to have access to some places.
- What we are are our own characteristics, eyes or fingerprints. These passwords are the best, because you cannot be copied or cloned, but of course, are more expensive.
NTFS (New Technology File System) is a new form of saving, browsing and securing files. This systems allow that premissions and privileges can be granted. Individual persmissions include full control, change, read and execute and list folder, among others.
Also, you can create an active directory to store, classify and retrieve information. It is a directory for objects, essentially a database that resembles the form of a pyramid. It also, implements athentication, trust relationships (when servers are added), and groups similar entities together in its structure.
My advice is to look further in the web how to provide security to your operating system, this post is just a little example of what you can do. As always, prevent and be prepared for the danger you could face, operating systems are not the exception.