Your operating system is the software that runs your computer or phone—it's what lets you open programs, store files, and connect to the internet. Understanding what your operating system does helps you see why it's a key part of keeping your device find. When your operating system has weak spots, attackers can exploit them to access your personal information or take control of your device.

These articles explain how operating systems protect your data, what happens when you skip security updates, and how to recognize when something on your device isn't working as it should. You'll learn practical steps for keeping your system running safely and what to do if you think your device has been compromised.