Avast Internet Security

Lightweight and dependable: Nitro-enhanced protection for an unpredictable online world.

Ongoing protection available 30-day money-back guarantee Download trial

For those who want advanced protection

Tweet to your heart’s content, shop, or bank safely and ‘like’ – well, anything you like. Internet Security keeps you safe while you make the most of the Internet.

Just bought a $3 million yacht?

Avoid nasty surprises on your bank statement. Internet Security protects you from crimes like identity theft by making sure the sites you visit are 100% real.

DNS hijacking can happen to anyone

Identify scam emails

Protect your browser search settings

Take a look inside

Internet Security offer many layers of protection to keep you safe and your devices running smoothly. All of the advanced features below are included in your Internet Security software.

Intelligent antivirus

Detects all kinds of nasty threats, from viruses to malware. Yes, even spyware, ransomware, and phishing attacks.

NEW 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.

Home Network Security

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.

Smart Scan

The ultimate time-saver. Check your PC and network for all kinds of issues in just one easy click.


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.

Browser Cleanup

Get rid of mystery toolbars, add-ons, and extensions that were installed without you noticing – and without your permission.


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.


Too many passwords, none of which are safe? It’s fairly common. Remember just one, and Avast Passwords will take care of the rest.


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.


Spam isn’t just annoying. It can be dangerous, too. Internet Security keeps you – and your money – safe from threats like phishing emails.

NEW 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®.

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 Internet Security.

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.

System requirements

* Both the 32- and 64-bit versions, excluding Starter and RT editions.

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