Definition
Operating System Security covers principles, mechanisms and activities intended to protect an operating system against Threats that may compromise its confidentiality, integrity, availability or correct operation.
Human Explanation
The operating system manages the entire device. Its security affects every application that runs on it and all data stored there.
Why it Matters
A compromised operating system may allow an attacker to control the device and access all of its resources.
Conceptual Boundary
Operating System Security is not limited to installing protective software. It also includes configuration, updates, access management and monitoring.
Practical Perspective
The most secure operating system performs only the functions that are necessary and is maintained regularly.