Download Free Trojan Scanner, Cleaner & Remover Tool

Avast’s best trojan scanner and cleaner — completely free

Hidden trojan horse malware 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:

Stop trojans dead in their tracks

If there are any trojans, viruses, or other malware on your machine, we’ll find and destroy them. Then we’ll make sure you’re never infected again.

Update 24/7

Trojans are always evolving, but so are we. No matter what new malware you come across, we’ll keep you safe with unmatched malware-detection technology.

Stop all kinds of malware

Trojans are just the beginning. From viruses to bad browser extensions to outdated software and other threats, Avast has your back.

Enjoy unrivaled protection

Independent experts and industry leaders agree that Avast delivers. Avast One received the prestigious 2021 Editors’ Choice award from PCMag as well as a perfect 5 star review from TechRadar.

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?

DOWNLOAD FREE TROJAN REMOVER

Get it for Android, iOS, Mac

DOWNLOAD FREE TROJAN REMOVER

Get it for iOS, Android, PC

INSTALL FREE TROJAN REMOVER

Get it for PC, Mac, iOS

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

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.”

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:

AV-TEST: Top Product, AV Test Certified, 2022

PC Mag: Editors’ Choice, 2021

TechRadar: 5 stars, 2021

AV Comparatives: Top Rated Product Award, 2020

A trojan scanner trusted by over 400 million users

But don’t just take our word for it.

The UI for your software - amazing. Great work over the years. Can't say enough good things!

Ryan R.

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.

Eric S.

I’ve been using Avast for over a year and have found it one of the best free software protection devices on market.

Daryl C.

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.

DOWNLOAD FREE TROJAN REMOVER

Get it for Android, iOS, Mac

DOWNLOAD FREE TROJAN REMOVER

Get it for iOS, Android, PC

INSTALL FREE TROJAN REMOVER

Get it for PC, Mac, iOS

INSTALL FREE PROTECTION

Get it for Mac, PC, Android

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.

What are the signs of spyware infection?

Is a trojan horse a virus?

A trojan is not a virus. Viruses are designed to replicate and spread within a network, but trojans do not replicate. A trojan horse is a type of malware that appears to be a legitimate program or app, and it relies on social engineering to trick you into installing a fake app containing malware. Trojans and other malware like worms are not viruses, but they can be just as destructive.