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Get privacy and performance tips, straight from the experts
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.
Browsing on public networks is not always safe. Learn how to find a secure Wi-Fi connection and stay safe on a public network.
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.
What is a bot? Find out the meaning of a bot, how they work, and learn about the different types of computer bots.
Are you getting the most out of your Mac? Here's all you need to know about Apple hardware tests, diagnostics, benchmarks, and speed.
Keeping people safe & secure around the world
Using real-time intelligence from over 435 million Avast users, we block more than 1.5 billion threats every month.