Features

Intelligent antivirus
Detects all kinds of nasty threats, from viruses to malware. Yes, even spyware, ransomware, and phishing attacks.
CyberCapture
Personal, real-time threat detection. Sends unknown files to the Avast Threat Labs to be analyzed by our experts, and quarantines them if they're dangerous.
NEW Behavior Shield
Malware loves to act innocent. Avast analyzes app behavior in real-time to catch any suspicious changes before damage is done.
Smart Scan
A simple click has never been more powerful. Checks your PC and network for all kinds of issues - and tells you how to fix them instantly.
Firewall
You lock your front door to keep thieves out of your home, so why should your computer be any different? Firewall keeps you safe from all kinds of intruders.
Sandbox Ever downloaded a file from a shady server and suspected it's trouble? Test files in a sealed space first, and keep the rest of your PC safe.
Wi-Fi Inspector Is your router set up properly to block threats? We'll tell you. Otherwise, anyone can break into your home network and anything connected to it.
Browser Cleanup Get rid of mystery toolbars, add-ons, and extensions that were installed without you noticing and without your permission.
Passwords Too many passwords, none of which are safe? It's fairly common. Remember just one, and Avast Passwords will take care of the rest.
NEW Passive Mode Don't like to play favorites with antivirus? No problem. Avast can sit quietly in the background until you need our other advanced features.
Real Site Your router settings can be changed to connect you to a fake site. Why? So hackers can steal your banking details. SecureDNS keeps your online banking safe.
Anti-spam Spam isn't just annoying. It can be dangerous, too. Internet Security keeps you, and your money, safe from threats like phishing emails. The anti-spam is available as a separate, free download.
SafeZone Browser The new way to browse, bank, and shop. With a suite of tools designed to provide extra protection, discover why SafeZone is the world's most secure browser.
NEW Game Mode Automatically puts your Windows and other notifications on hold so you've got maximum processing power and speed for your game.
In-product support Having trouble with your Avast? You don't have to search far and wide to get help. Just send us a message from your very own Pro Antivirus.
Avast Account All your Avast-protected devices in one handy place. Manage your licenses, locate your mobile devices, and stay super-organised the easy way.

Key technology:

Tweet to your heart's content, shop, or bank safely and 'like', well, anything you like. Internet Security is intelligent threat-detection that keeps your identity safe while you make the most of the Internet.
Avoid fake websites
Hackers can easily create a replica of your banking site to steal your logins and passwords. Internet Security encrypts your data so your information stays safe.
Spot scam emails
Today's phishing emails are not as obvious as "you've won the lottery." Internet Security stops more than the usual strange text and sender.
Firewall your data
The data sitting on your PC is the key to identity theft. Internet Security's Firewall is the strong gatekeeper you need to stop hackers from accessing it.