essential protection that’s light, powerful, and completely không lấy phí

get it for mac, android or ios

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download không tính phí antivirus software | avast 2021 pc protection

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        miễn phí antivirus software | avast 2021 pc protection

no slowdowns or interruptions

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cloud-based award-winning free virus protection

packed with the largest threat-detection network, machine-learning virus protection, and home network security that won’t slow down your pc.

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        miễn phí antivirus software | avast 2021 pc protection

easy to install,
effortless to use

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        miễn phí antivirus software | avast 2021 pc protection

avast không lấy phí antivirus scans for security and performance issues and tells you how to fix things instantly.

it protects you in real-time by analyzing unknown files before they get to you. so relax: with avast, you’re running the most
trusted antivirus out there.

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        miễn phí antivirus software | avast 2021 pc protection

what’s new with the latest version?

a beautifully intuitive interface, advanced application protection, a new passive mode for running multiple security products in parallel — and a little something for you gamers and movie buffs.

designed for effortless security

just a click of our fresh, new, easy-to-use interface checks everything from your passwords to your home network security.

new

game or movie time,
now uninterrupted

we’ve renamed game mode and taught it some new tricks. now called do not disturb mode, it blocks distracting popups whether you’re gaming, watching movies, or presenting in fullscreen.

introducing behavior shield

we don’t just check your applications for malware. we now keep an eye on their behavior to make sure they don’t suddenly go rogue.

this is no run-of-the-mill không tính phí antivirus

on top of our latest features, we cover essential intelligent threat-detection and real-time protection with such a light touch on your pc, you never even know it’s there.

download free antivirus software | avast 2021 pc protection

intelligent antivirus

detect and block viruses, malware, spyware, ransomware, and phishing. we use smart analytics to stop threats before they affect you.

download free antivirus software | avast 2021 pc protection

cybercapture

automatically send suspicious files for analysis in the cloud, and push a cure to all avast users if it’s a threat.

wi-fi inspector

automatically detect weaknesses in your home wi-fi and strangers piggybacking on your network.

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smart scan

find all those cracks that allow malware to slip in, from unsafe settings and passwords to suspicious add-ons and out-of-date software.

over 435 million users worldwide trust avast

here’s what users say about it:

the ui for your software – amazing. great work over the years. can’t say enough good things!

thank you, avast, for the excellent work you do. i run your antivirus software on both my mac os x and my windows machines. you have the best products on the market, period.

i’ve been using avast for over a year and have found it one of the best
miễn phí software protection devices on market.

visit our support center for more faqs

system requirements

we’re not demanding. all you need is a pc with windows 10, 8.1, 8 or 7*, 1 gb ram and 2 gb of hard disk space. and that’s it.

* both the 32- and 64-bit versions, excluding starter and rt editions.

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get security tips for your pc, straight from the experts

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