Cyber security

What is Trojan Malware: All You Need to Know

what is Trojan

Trojans are a type of malware (usually files, systems, or computer code) that integrate with other genuine software to appear harmless. Much like the Trojan horse’s intent in Greek legend, Trojans fool their recipients and package themselves to impersonate legitimate files. that target people to click, open, or install.

Once opened, a Trojan malware installs malicious software that spies on users’ computer software, data, or networks and causes serious damage. Trojans are also sometimes referred to as Trojan horse viruses or Trojan horse viruses. reproduce and distribute, while a trojan is not designed to replicate. The viruses and Trojans also differ in the viruses, should modify the data while Trojan horses are intended to steal the information.

What Is Trojan Malware and Its History?

Trojans were one of the earliest cybersecurity threats, evolving in the early 1980s and 1990s as computers became mainstream for business and personal use. In 1975, a computer programmer named John Walker invented the first Trojan called Animal. Since then, the malware has continued to improve rapidly and has become increasingly difficult to detect.

In recent history, there have been instances where Trojans have been harmful and costly to their unsuspecting targets. One of the most notable was Emotet, featured in Europol’s 2021  organized crime report, SOCTA (Serious and Organized Crime Threat Assessment). Emotet used email as a vehicle to attack its victims and became known as a banking Trojan, causing  Chilean bank Consorcio to incur $2 million in losses.

How does Trojan Malware Work?

Trojans are designed to carry out a variety of malicious attacks. Social engineering and phishing are examples of common delivery methods. to randomly shut down the computer or wipe the entire hard drive. Someone delivering a Trojan can control it remotely, making it easy to infect hardware and networks that cannot be accessed physically.

For example, a user may receive an email that appears to be from someone they know. The attached file in the trojan message looks legit. Since the emails appear to be from a trusted friend or organization, most people wouldn’t think twice about clicking the link. This allows the Trojan to unleash malware on the device that can quickly spread, infect, and potentially damage a computer.

Common Types of Trojan Malware

Whether you’re new to cybersecurity or just brushing up on your knowledge, it’s a good idea to know what threats are out there. Answer “What is a Trojan?” It’s more complex. Some of the most notable Trojan horse malware are listed below. While not exhaustive, it is a cross-section of the main types of attacks accessible to those performing malicious cybersecurity actions.

Backdoor Trojan

Attackers may utilize backdoor Trojans to intrude and gain remote access and control over target hardware. Backdoor Trojans can allow third-party code to be installed and run on victims’ devices, which then force various actions, such as recording keystrokes or even tapping onto computer microphones and cameras. Attackers also use more harmful trojans to control a set of infected computers, as well as to download and steal data.

Distributed Denial of Service (DDoS) Attack Trojan

Normally referred to as DDod Trojan, this type of malware is used to dismantle your network. They attack the IP address of a user and bombard it continuously. 

Fake AV Trojan

These types of malware Trojans present themselves like antivirus software but will ask for money from you in order to execute the task of identifying and eliminating risks, irrespective of whether they are real threats or fraudulent.

Mailfinder Trojan

Simply put, Mailfinder Trojans will steal your list of email addresses from your device.

Ransom Trojan

This is one of the more severe ones. This Trojan will either damage or lock some sensitive data on your device, then will ask for money to reverse the damages done.

Remote Access Trojan

The attacker uses this Trojan to gain complete control over your system and devices with the aid of a remote connection. 

SMS Trojan

This type of Trojan infects your mobile devices and uses them to divert sensitive messages. 

Trojan Malware Attacks – Examples

One of the most popular forms of malware attacks today is using ransomware. The increasing use of cryptocurrencies has made it more convenient to launch these forms of attacks that limit access to computer networks and devices and hold them hostage until victims send a payment. Ransomware Delivers Payments. The banking industry has been a prime target for ransomware attacks, see

In 2007, a Trojan malware attack known as the “Storm” worm attacked computers in the United States and Europe. The attackers launched this trojan by sending the recipients an email with the subject  “230 killed in storming Europe”. Government officials and law enforcement have struggled to contain these types of Trojans because even after the original attack was shut down, the code would reappear and replicate itself.

Impact of Trojan on Mobile Devices

From desktops to laptops to Windows and Mac operating systems, Trojans are a potential threat to any end device. And in today’s predominantly mobile environment, hardware like smartphones and tablets are prime targets.

Cybercriminals have a knack for tricking unsuspecting users into downloading fake apps containing malware that look like genuine apps or other commonly downloaded items. Like trojans that run on laptops and desktops, mobile malware steals device data and often attempts to generate revenue by sending premium SMS text messages.

Recognize, Remove and Protect Against Trojan


Detecting Trojans can be difficult as they often mimic legitimate system files. Traditional antivirus programs are not as effective at detection. Computer processor performance

  • Undetectable software programs
  • Sudden computer shutdowns and restarts
  • Lost, deleted, moved, or encrypted files
  • Slow or dropped internet connections

On the plus side, trojans don’t replicate themselves, so removing the malware’s host program will often remove the Threat. However, there are situations in which that may not be possible. For example, some trojans install additional malware programs, making it difficult to detect and remove everything by removing a single program. It is best to use antivirus software to get rid of all traces of a Trojan attack. This is the easiest and most effective first step in identification and removal.


Removing it without using antivirus software may require different steps. Depending on whether the malware is masquerading as a program or creating malicious background processes. In any case, experts recommend starting a computer in Safe Mode to minimize further damage. And Mac operating systems also require different action plans to remove Trojan horse threats.

Remove a Trojan from a PC by  following these steps:

If you are using a Windows PC:

  • Open the PC settings.
  • Select Applications.
  • Go to Applications and Features.
  • Select the Trojan and Uninstall. 

To Remove a Trojan from a Mac:

  • First, Launch Finder
  • Open the Applications folder (click Command+Shift+A)
  • Find the Trojan
  • Delete the Trojan


When it comes to protecting against Trojan attacks, end users are the first line of defense. Users need to initiate this particular form of malware, so educating them, evaluating them, and being very careful about what they click. And also open is crucial to protecting against Trojans. End-user best practices  include:

  • Only visit websites with URLs beginning with HTTPS.
  • Never download attachments or click on unwanted or unexpected links, even if they appear to be from a known contact.
  • Refrain from installing any applications or programs from unofficial websites or apps repositories
  • Avoid system logins via email links  or text messages (login to accounts via a new browser tab or  approved app)
  • Use spam -filters to  prevent malicious messages from accessing email inboxes

Network administrators also play a key role in protecting against Trojans once again. You should install Internet security software on the computer and run regular diagnostic scans on mobile devices.

Also, experts recommend that you update your operating system at the beginning of the initial notification that new updates are available.

Updating antivirus software regularly is just as important as installing antivirus software. This prevents attackers from gaining access to computers through vulnerabilities in legacy systems. Firewalls help keep your personal information private. You should take the same precautions with pop-ups that free programs offer. 

What Is Trojan: Piggybacking Onto the End Device 

While Trojans are usually found in files such as email attachments, there are other ways they can gain access to networks and devices unintentionally. Of a user’s wireless network tapping into and using the neighboring Internet connection. While this may seem harmless, it generally leaves users with less bandwidth for an Internet connection. And also more vulnerable to malware attacks.

Learn More About Protecting Against Trojan Attacks and Become a Master in Cybersecurity

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Is Trojan malware malicious?

One of the most common and dangerous types of threats that can infect your computer or mobile device is a Trojan horse . Trojans are vulnerable to malware that are hidden as relatively harmless or useful software that you download from the Internet, but they contain malicious software that is designed to harm you device.

What was the motivation behind the development of Trojan malware?

A fake antivirus Trojan is a programme that pretends to be an antivirus programme. The Trojan resembles the behaviour of valid antivirus software. it is designed to detect and remove threats in the same way that a typical antivirus programme does, then demand money from users for removing threats that may or may not exist.

What are the dangers of a Trojan malware?

Trojans have the potential to be extremely dangerous. They, like viruses, have the ability to delete files or information from hard drives. They can also capture and resend sensitive data to an external address, as well as open communication ports, allowing an intruder to remotely control the infected computer.

What is the purpose of Trojan malware?

A Trojan malware is a type of malware that conceals itself as a piece of code and downloads on to computer. An attacker will typically use social engineering to hide malicious code within legitimate program in order to gain access to a user's system with their software.

Is there still a Trojan virus?

To be honest viruses no longer exist. Virus writers used to primarily target Microsoft, but advances in security technology have rendered the aged recreating code programmes largely outdated.

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