A computer virus is a type of malware that can spread quickly between computers and other devices. Learn how viruses work and how to protect against them.

What is a VPN? What does it do? How does it work? And how can you use a VPN? Learn all about a VPN's definition and uses in our guide.

Wondering why your internet speed is slow? Learn how to improve your internet connection right now, whether you're on Wi-Fi or Ethernet.

We all have some concept of hacking - but do you really know what it is? Read our full hacking definition here.

Tor Browser is a tool for anonymous web browsing. Find out how Tor works, if it’s safe, and how to use it on your laptop and mobile device.

Booting your Mac in safe mode can help you troubleshoot issues, test hardware, and resolve startup problems. Find out how in this guide.

What is a QR code and how does it work? Our QR code guide explains how to scan QR codes on both iPhones and Android devices.

Cryptocurrency is a virtual currency secured using cryptography. Read our guide to learn how crypto works and how to avoid crypto scams.