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We protect your privacy, keep you safe online, and safeguard your personal data with our Premium Security and VPN services.
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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.
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 report identity theft? If you think your identity has been stolen, find out how to report it to the FTC, the police, or the government.
Is your router infected with malware? Learn how to check a router for malware and viruses, and how to remove any malicious software you find.
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.