What is a computer trojan horse?


In today’s digital world, computer viruses and malware are becoming increasingly common. One of the most nefarious types of malware out there is the Trojan horse. No, we’re not talking about a giant wooden horse filled with warriors from Greek mythology – this is something far more insidious! In this blog post, we’ll be diving into what exactly a Trojan horse is, how it works, and what you can do to protect yourself against it. So buckle up and get ready for an informative (and possibly scary) ride!

What is a trojan horse?

A Trojan horse, also known as a Trojan, is a type of malware that disguises itself as a legitimate program or file in order to trick users into downloading and installing it. Once installed on your computer, the Trojan can perform various malicious activities without your knowledge.

Unlike viruses and worms, Trojans do not replicate themselves or infect other files. Instead, they rely on social engineering tactics to convince users to download and execute them. This can be done through email attachments, software downloads from untrusted sources or even by exploiting software vulnerabilities.

Once inside your system, Trojans can steal sensitive information like passwords and credit card numbers or give remote access to hackers who may use it for illegal activities. Some Trojans are designed specifically for targeted attacks such as espionage or sabotage against individuals and organizations.

Trojan horses are notoriously difficult to detect because they often hide their presence by disabling antivirus software or using rootkit technology. As such, it’s essential to take preventative measures against this type of malware before you fall victim to an attack.

How does a trojan horse work?

A trojan horse is a type of malicious software that disguises itself as a harmless program in order to gain access to your computer system. Once it has infiltrated your computer, the trojan can perform various harmful actions without your knowledge or consent.

One common way that trojans work is by creating a backdoor into your computer system. This allows hackers and cybercriminals to remotely control your system and steal sensitive information like passwords, credit card numbers, and personal data.

Another way that trojans can work is by installing other malware onto your system. For example, they may download spyware or adware programs that track your online activity or bombard you with unwanted ads.

Trojans can also be used for phishing scams, where they trick you into giving away sensitive information like login credentials or financial details through fake websites or emails.

The key feature of a trojan horse is its ability to disguise itself as something benign while carrying out malicious activities behind the scenes. It’s important always to have updated antivirus software installed on your device and practice safe browsing habits when using the internet.

What are the different types of trojan horses?

There are several types of trojan horses, each with its own specific features and malicious intent. One type is the Backdoor Trojan, which creates a secret backdoor on your computer that allows hackers to obtain remote access without your knowledge. This type of trojan often comes bundled with other software or applications.

Another common type of trojan is the Rootkit Trojan, which disguises itself as an essential system file and embeds itself deep within your computer’s operating system. Once installed, it can steal sensitive information like passwords and banking details, monitor your activity or even take control of your machine.

There’s also the Banking Trojan – designed specifically to steal financial data from users during online transactions by intercepting communications between banking sites and web browsers. The Downloader Trojan is another popular variety that downloads additional malware onto infected computers automatically.

There are FakeAV Trojans that present themselves as antivirus programs but instead install harmful software on your computer while pretending to scan for viruses. It’s important to stay vigilant and protect yourself against these various types of trojans through updated security measures such as firewalls and antivirus software.

How can you protect yourself from a trojan horse?

Protecting yourself from a trojan horse is crucial to keep your computer and personal information safe. The following are some steps you can take:

Firstly, always keep your operating system, antivirus software and other programs up-to-date. This ensures that any security vulnerabilities found in previous versions have been fixed.

Secondly, be cautious about downloading files or clicking on links from unknown sources. Always verify the sender’s email address before opening any attachments.

Thirdly, use strong passwords for all of your online accounts and change them regularly. Avoid using simple or easily guessable passwords such as “password123” or “123456”.

Fourthly, activate two-factor authentication whenever possible. This adds an extra layer of security by requiring a second form of identification when logging into an account.

Consider using a virtual private network (VPN) when accessing the internet from public Wi-Fi networks or unfamiliar locations. A VPN encrypts your internet connection making it harder for hackers to intercept sensitive data.

By implementing these measures, you can significantly reduce the risk of falling victim to a trojan horse attack and protect yourself against potential cyber threats.


A Trojan horse is a malicious software that pretends to be something else in order to trick users into installing it. It can cause serious damage to your computer system, steal sensitive data or allow unauthorized access to your device.

To protect yourself from this type of threat, make sure you use reliable antivirus software and keep it updated regularly. Be cautious when downloading files or opening attachments from unknown sources and always think twice before clicking on any suspicious links.

Remember: prevention is better than cure. By taking the necessary precautions, you can avoid falling victim to a Trojan horse attack and keep your personal information safe online.

Melina Richardson
Melina Richardson is a Cyber Security Enthusiast, Security Blogger, Technical Editor, Certified Ethical Hacker, Author at Cybers Guards. Previously, he worked as a security news reporter.