Free Trojan scanner

Malwarebytes security dashboard shown on desktop, laptop, and mobile devices with a 100% Excellent protection score.

Scan and remove Trojan horse malware from your device, or get proactive protection with Malwarebytes Premium.

Malwarebytes security dashboard shown on desktop, laptop, and mobile devices with a 100% Excellent protection score.

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Trojan horse virus symptoms

Trojans disguise themselves as legitimate software, so they can be hard to spot. Watch for these warning signs.

Lots of desktop pop-ups

Frequent pop-up ads and messages advertise products or say your device is infected.

Slow computer

Trojans and the malicious software they download take a lot of computer resources, which makes your device run slowly.

Applications won’t run

Programs won’t run from the Start menu or Desktop—or programs execute that you didn’t start.

Annoying Internet pop-ups

You get multiple pop-ups the moment you start browsing the Internet.

Your computer has a mind of its own

Your device turns off, launches applications you didn’t start, or prints documents you never sent to the printer.

Check your devices for Trojans now

Free Trojan scanner vs. Premium protection: what do you need?

Both find and remove Trojans. The difference is whether you want to clean up after an infection or stop it before it gets in.

Malwarebytes Free

Remove a Trojan infection

Best if you think a Trojan is already on your device and want to find and remove it now.

  • Scans your device for Trojans and other malware when you run it
  • Removes the threats it finds
  • Free to download and use

No real-time protection between scans

Malwarebytes Premium · Recommended

Stop Trojans before they get in

Best if you want your devices protected all the time, not just when you scan.

  • Everything in the free scanner
  • Real-time protection that blocks Trojans and other threats automatically
  • Ransomware protection
  • Blocks malicious websites and scams
  • Protects Windows, Mac, Android and iOS

How to remove Trojans

Find and remove Trojans in a few minutes with the free Malwarebytes Trojan scanner.

01

Download the scanner

Download the free Malwarebytes Trojan scanner and open the installer.

02

Install and open it

Follow the on-screen steps to install, then open the app.

03

Run a scan

Click Scan. Malwarebytes checks your device for Trojans, viruses, spyware, adware and other threats.

04

Remove what it finds

Review the results and quarantine any threats. Restart your device if prompted.

Scanning removes Trojans that are already on your device. To stop new ones from getting in, turn on real-time protection with Malwarebytes Premium.

Don’t take our word for it

“We use Malwarebytes on all of our company computers. Our experience is that Malwarebytes is effective and trouble free.”

‒ Robin G.
Fort Worth, TX

“Malwarebytes provides an extra, invaluable layer protection against malicious data, and that makes me and our systems feel safer!”

‒ Billy H.
Sarasota, FL

“Eliminating hundreds of potential malware and trackers every week for our entire organization.”

‒ Raymond P.
Southfield, MI

Trojan horse virus FAQs

What is a Trojan horse virus?

What are the signs my device has a Trojan?

Is the Malwarebytes Trojan scanner really free?

What is the difference between the free scanner and Malwarebytes Premium?

Are Trojans the same as viruses?

How do Trojans spread?

Does Malwarebytes protect Macs and mobile devices from Trojans?

Do I need dedicated anti-Trojan software?

Get started

Get Malwarebytes Premium for proactive protection against all kinds of malware.