What Is A Trojan Virus? | How to Get Rid of a Virus on Your PC or Phone!

Have you ever downloaded and installed an application on a computer or mobile device that looks legitimate but ended up being a problem?

A trojan is a type of application that disguises itself as legitimate, but it is not. Trojans are used by hackers, cuber-thieves, and other online criminals to take control of your device. The application has a design that enables it to steal, damage, disrupt, and cause harm to your device, data, or network.

A trojan will act as a legitimate application to deceive you into downloading and executing it on your device. Once it is on your PC or mobile device, the Trojans can execute the purpose for which it was designed. Check out all the best anti-malware here, and while there, take a look at the best free security software and best antiviruses overall in this post. We thought of Linux users by reviewing the best internet protection for that OS, too.

How Do Trojans Work?

Trojans get into your device and execute in several ways.

For instance, you can get an email attachment from the email addresses of someone you think is known to you. The Trojans may be disguised as the email attachment and trick you into opening it.

Unknown to you, the email may be from a cybercriminal, and the attachment has downloaded and installed Trojan malware on your device.

The Trojan malware can spread and infect other files in your PC's user account and can damage the device. Also, find out more about malware here.

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What Does a Trojan Virus Do on an Infected Computer?

A trojan will conceal its true content from the user to trick you into downloading and executing it while using your computer or mobile device. The name Trojan virus is derived from the wooden horse that was used to sack Troy. Just like the wooden horse that seemed harmless but was full of soldiers on the inside, the malware looks harmless from the outside. However, when you install it on your device, it causes serious harm and threats. 

Once you activate the Trojan, it enables cybercriminals to steal your user data, spy on you, gain back door entry into your device, and steal your user sensitive data. So, learn how to tell if someone is hacking your computer with the help of this article.

Some of the harmful actions that the Trojan virus can execute include:

  • Modifying your data
  • Blocking data
  • Selecting data from your device
  • Copying data
  • Disrupting the performance of your computer or computer networks
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Are Trojans the same as viruses?

The names Trojan malware and Trojan viruses are used interchangeably. A Trojan horse malware and Trojan viruses are similar in a variety of ways. For instance, a Trojan horse malware will execute itself on your computer and other devices to steal your account information and destroy your sensitive data. It will also spy and track your online activities, just like a virus. The two will also negatively affect your computer's performance. Just like the spyware, we respectively explained in this article.

They are also similar in how they find their way into your machine. You can transfer the malware into your PC from links and email attachments, and other malicious programs, disguising themselves as genuine. And you can also find out what a computer worm is, or learn here how to detect keylogger spyware.

But a Trojan infection is different from a virus in several ways. For instance, a virus can replicate itself and spread to other devices and weakens computer s performance without human interaction. On the other hand, a Trojan cannot replicate itself in your device, but it requires you to execute it.

It will disguise itself as a genuine app to trick you into loading and executing it on your PC.

How to Detect Trojan Viruses on Your Device

Be cautious and stay safe. Different types of Trojans are used to deliver different types of malware into your device. As such, if you suspect you have a Trojan infection, you should look out for the signs and symptoms of malicious software in your device and/or text messages.

So of the telltale signs will include:

  • A decline in the performance of the infected computer. The device can start running slower than usual, and applications can start crashing more frequently
  • You can start experiencing more pop-ups and spam interruptions on your computer. The number of pop-ups from your browser or email spam can become more frequent
  • You can also start noticing strange behavior on your device. Some programs can start running even when you don't execute them. The trojan virus can also modify your document such that you can start noticing new or strange icons on your device.
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If your device is exhibiting such symptoms, it's possible it has a Trojan or any other type of virus infection. Try to look for any programs or applications that you cannot remember downloading or installing on your PC.

If you have an unrecognized file name or program, type its name on a search engine to determine if it is a recognized Trojan.

You can also get reliable anti-virus software to scan your computer that could give your PC real-time protection to determine if there is any malicious file in the device. Be cautious of the anti-virus software you use as some of them are disguised as antiviruses, but they are malicious viruses themselves.

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Types of Trojans 

Backdoor Trojans 

A backdoor Trojan allows hackers and other malicious users to access the infected computer remotely. The hackers can download, upload, and also execute files at will.

The malicious users can also send and receive files, display data and reboot the infected device.

Backdoor Trojans can also be used to unite a group of infected computers to form a zombie or botnet network used to conduct criminal activities.


Exploits are malicious programs on your computer that contain codes or data that takes advantage of a vulnerability in your computer to infect it.

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Trojan Banker

A Trojan banker is a dangerous program designed to steal your account data for your e-payment systems, debit or credit cards, and online banking systems.

Trojan DDoS

These types of Trojans conduct DoS (Denial of Service) attacks against a targeted web address.

The Trojans work by sending several requests from your computer and other infected devices. The attacks will overwhelm the targeted address, which can lead to denial of service.


A Trojan downloader will download and install new versions of unsafe programs on your device, including adware and other Trojans.

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Trojan -fake AV

These Trojans will copy the activities of the antivirus software protection. The Trojans are designed to extort money from you, and in return, they are supposed to detect and remove threats from your computer system. However, the threats that they report on your computer are non-existent.

How to Protect Your Device From Trojan Horse Malware

If you want to secure your device from attacks, here are some dos and don't that can be of help:


  • Your computer security depends on whether or not you have internet security software. The software will scan your device for any type of malware and also help to eliminate it
  • Update your operating system with the latest updates from the software company. Cybercriminals and hackers take advantage of security loopholes to infect your computer system. The latest updates come with the latest security features and seals all the loopholes
  • Use Firewalls to keep your personal information safe
  • It will help if you back up your files regularly. In case of an attack, it will be easy to restore your data
  • Use unique passwords with combinations of letters, numbers, and symbols to protect data
  • Install a Trojan antivirus. The Trojan antivirus software will scan your device for Trojans and help to eliminate them


  • Don't be a victim, and don't download software from untrustworthy sources.
  • Don't be a victim and avoid opening emails from unknown sources. Don't open a link or attachment from an email you don't know as it may contain a Trojan malware
  • Don't be a victim and don't open pop up windows that offer free programs with essential tasks. The pop-up windows may be enticing you to download and install a Trojan
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What is a Trojan virus? This is a question that internet users grapple with. A trojan is a malware disguised as a legitimate program to entice you to install it on your device. When you install it, it can carry out various harmful tasks such as stealing your data, modifying and deleting files, and enable backdoor access to your system. You can prevent your system from Trojan attacks by preventing downloads from unknown sources, having Trojan antivirus software, among other measures.

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