Context

This room introduces users to operating system security and demonstrates SSH authentication on Linux.

Starting hypothesis

I expected to discover that most operating system vulnerabilities come from user misconfigurations rather than flaws in the OS itself. I anticipated learning how authentication, permissions, and system architecture directly impact security, especially in a Linux environment.

Method / Used Tools

Introduction to Operating System Security

Operating System Basics

An operating system (OS) is the fundamental software layer that sits between computer hardware and the applications we use every day. Without it, a computer would be nothing more than a collection of electronic components incapable of performing meaningful tasks.

Common operating systems include:

• Microsoft Windows
• macOS
• Linux
• Android
• iOS
• Chrome OS

To properly understand the role of an operating system in security, we must first understand the concept of hardware, because the OS exists primarily to manage and control it.

Computer Hardware

Computer hardware refers to all the physical components of a computer system — everything you can physically touch. Examples include:

• Screen