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Free Trojan Scanner and Removal Tool

Avast One scans and cleans Trojans hiding on your device — and prevents future attacks from Trojans, viruses, and other types of malware. Get free protection, or upgrade now for premium online security.

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2021
Editors' choice
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2021
Editor's choice
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2021
Top Rated
Product

Avast’s best Trojan scanner and cleaner — completely free

Hidden Trojans can compromise your data and slow down your PC (and other devices, too). Trojans are disguised as harmless files, but start to wreak havoc once they sneak into your system. Thankfully, Avast’s free antivirus is one of the fastest and most accurate Trojan scanners on the market. There’s simply no better choice to remove Trojans ASAP.

Avast One lets you:

We’ve packed the world’s largest threat-detection network and machine-learning malware protection into a single, lightweight malware scan and removal tool that won’t slow down your PC. And did we mention, it’s 100% free?

Don’t take our word for it

Leading independent reviewers agree: Avast One is worthy of its numerous accolades, awards, and 5-star reviews. When honoring Avast One with its 2021 Editors’ Choice award, PCMag praised Avast’s “numerous excellent lab scores,” and described Avast One as “a partner to keep you, your devices, and your data safe and happy.”

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And TechRadar awarded Avast One a full 5 stars, noting its malware protection and prevention capabilities. “Avast One doesn't just do a good job of detecting malware: it detects and blocks access to malicious websites, reducing the chance you'll get infected in the first place.”

Avast’s antivirus engine has been garnering top praise and prestigious awards for years:

  • PC-mag_logo2

    PC Mag: Editors’ Choice, 2021

  • tech-rada-logo-27x27

    TechRadar: 5 stars & Editor’s Choice, 2021

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    AV-TEST: Top Product, AV Test Certified, 2021

    • AV Comparatives: Top Rated Product Award, 2020

      AV Comparatives: Top Rated Product Award, 2020

  • AV Comparatives: 2018 Product of the Year

    AV Comparatives: 2018 Product of the Year

  • AV Comparatives: Advanced+ in malware protection and removal, 2018

    AV Comparatives: Advanced+ in malware protection and removal, 2018

A Trojan scanner trusted by over 400 million users

But don’t just take our word for it.

Keep your Mac and mobile devices safe

Every device needs protection from Trojans, not just Windows PCs. We’ll help you keep your Mac and mobiles free of Trojan-malware, too.

Avast offers quick, powerful scans against Trojans and other malware that target your Mac. Our top-performing antivirus for Mac will keep your Mac safe from other threats, too — all for free.

It’s also important to protect your Android phones and tablets. Avast’s free antivirus tool for Android eliminates Trojans and other malware threats while keeping your Wi-Fi connection secure.

Download our free Trojan scanner and remover

Looking for the best way to protect yourself against Trojans? You found it. And at the best possible price — free.

FAQs

How can I get rid of a Trojan?

There’s no easier way than downloading a Trojan scanner and removal tool, like Avast One. But if you want to learn how to identify and remove a Trojan (or any other kind of virus) from a specific type of device, we’ve got you covered:

Can a Mac or mobile device get Trojans, too?

If you ever connect your device to the internet, then yes, it’s at risk. Mac attacks have been growing over the past few years. And while Android devices are more at-risk than iPhones/iPads, iOS devices are still vulnerable to other security threats.

Is Windows Defender enough to protect my PC?

Windows Defender lacks many essential features that other free antiviruses offer, and it sometimes even blocks clean files that you can trust. For best results, use a free Trojan scanner and remover like Avast One to stay safe.

What are Trojans and how do they spread?

A Trojan is a type of malware that gets into your computer much like its ancient Greek namesake. It disguises itself as something friendly or desirable, then sneaks into your device when you finish your download. Trojans can be attached to emails, posted on file-sharing sites, or found in illicit storefronts.

System requirements

We’re not demanding. All you need is a PC with Windows 11, 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.

Windows 10 compatible

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Protect your PC against Trojans and other malware with Avast One

FREE DOWNLOAD
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Editor's
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Protect your Mac against Trojans and other malware with Avast One

FREE DOWNLOAD
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Protect your Android against Trojans and other malware with Avast One

FREE INSTALL
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Protect your iPhone against cybersecurity threats with Avast One

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