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.

A VPN is a secure, encrypted connection that protects your privacy online. Learn what VPNs are, how they work, and why they're essential to your security.

Wondering why your internet is so slow? Read our full guide to find out how to improve your 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.

What is a browser hijacker, and what risks and damage can browser hijacking cause? Learn how to remove browser hijackers and defend against them here.

Find out what SSL stands for and what an SSL certificate is. Learn how SSLs work and how they encrypt important data to keep it secure.

What is the Windows Registry? Find out how it works, how to open it with regedit (the registry editor), and how to edit it with our simple guide.

How do you know if your phone has been hacked? Learn how to protect your cell phone from hacking.

The best passwords are strong enough to thwart a brute force or dictionary attack. Find out how to create good, easy-to-remember passwords.