They can also "piggyback" on supposedly free programs. Once again, therefore, it is important not to use dubious sources for software downloads such as codec packs or cracked programs, even if you might save a few euros.
The damage that can be caused by Trojans often exceeds the value of the software if it had been purchased through regular channels. Incidentally, a Trojan should not be confused with a virus. Computer viruses reproduce independently, whereas a Trojan is merely a door opener — but with potentially devastating consequences. Therefore, here is a checklist on how to protect yourself and your devices from Trojans:.
The Trojans mentioned here are the best-known types. What they all have in common is that they can only get onto the end device with the help of the user. However, if you surf the web carefully, do not open email attachments without thinking, and only obtain programs from secure sources, you should be able to avoid these threats. An up-to-date operating system and an always-on virus scanner will protect you even better from Trojans. Kaspersky Internet Security. Detecting ransomware — how encryption Trojans differ.
Tips on avoiding phishing. Ransomware protection — how to keep your data safe. We use cookies to make your experience of our websites better. By using and further navigating this website you accept this. Detailed information about the use of cookies on this website is available by clicking on more information. These actions can include: Deleting data Blocking data Modifying data Copying data Disrupting the performance of computers or computer networks Unlike computer viruses and worms , Trojans are not able to self-replicate.
Types of Trojan Backdoor Trojans They are one of the simplest but potentially most dangerous types of Trojan. Exploit Exploits are programs that contain data or code that take advantage of a vulnerability within an application on your computer. Rootkit Rootkits are designed to conceal certain objects or activities in your system.
Banking Trojans Banking Trojans are among the most widespread Trojans. Fake antivirus Trojans Fake antivirus Trojans are particularly insidious.
Trojan-GameThief This type of program steals user account information from online gamers. SMS Trojans They may seem like a relic from another century, yet they are still active and pose a significant threat.
Trojan-Mailfinder These programs can harvest email addresses from your computer. Cybercriminals want to cause maximum damage with Trojans If surveillance software is used by the state to track and punish criminal offenses, cybercriminals have exactly the opposite in mind.
In summary: Emotet is considered one of the most destructive and dangerous Trojans. It isn't yet known who is behind Emotet. The damage caused by Emotet runs into the millions. Companies are the main targets. Private users can still be affected if Emotet reads the stored email addresses from address books and adds them to its immense database.
This could occur through the attacker redirecting traffic to a device connected to a Wi-Fi network and then using it to launch cyberattacks. There are many types of Trojan horse viruses that cyber criminals use to carry out different actions and different attack methods.
The most common types of Trojan used include:. A Trojan horse virus can often remain on a device for months without the user knowing their computer has been infected. However, telltale signs of the presence of a Trojan include computer settings suddenly changing, a loss in computer performance, or unusual activity taking place.
The best way to recognize a Trojan is to search a device using a Trojan scanner or malware-removal software. Trojan attacks have been responsible for causing major damage by infecting computers and stealing user data. Well-known examples of Trojans include:. The Fortinet antivirus services. In the span of a minute, FortiGuard eliminates, on average, 95, malware programs.
FortiGuard does this by incorporating knowledge of the different types of viruses within the global threat landscape. Countermeasures are engineered to neutralize each type of threat, and then they are automatically enacted by FortiGuard, thereby protecting the networks under the FortiGuard umbrella. Skip to content Skip to navigation Skip to footer. What Is a Trojan Horse Virus?
History of the Trojan Horse. The Trojan horse gave them the access they had been wanting for a decade. A Trojan virus, similarly, can be a good way to get behind an otherwise tight set of defenses. The Trojan horse appeared to be a legitimate gift. In a similar vein, a Trojan virus looks like legitimate software. How Do Trojans Work? Make sure a Trojan antivirus is installed and running on your computer. To stay up to date with emerging Trojan viruses and other online threats, stay tuned to the Webroot Threat Blog.
What is a Trojan Virus? Types of Trojan viruses Some of the most common types of Trojan virus include: Backdoor Trojans - This type of Trojan allows hackers to remotely access and control a computer, often for the purpose of uploading, downloading, or executing files at will.
How to recognize and detect a Trojan virus Because Trojans are used as a delivery device for a number of different types of malware, if you suspect your device may have been breached by a Trojan, you should look for many of the same telltale signs of malicious software. These may include: Poor device performance- Is your computer or mobile device running slowly or crashing more frequently than normal?
Examples of Trojans Zeus - Also known as Zbot, Zeus is a successful Trojan malware package with many variants used to carry out a number of different types of attack.
Protect your computer from Trojan horse threats As with protecting against most common cybersecurity threats, effective cybersecurity software should be your front line of protection. There are many trojan categories and their names are connected to the main function they perform.
Here are 4 examples:. Backdoor Trojan. They are those trojans that open backdoors for criminals to have full access to the machine. Downloader Trojan. They are intended primarily to download and deploy other malicious code on the machine, such as ransomware. DDoS Trojan.
They are the trojans responsible for making the computer a zombie, which will later be used in other attacks. Spy Trojan. They are the trojans responsible for reporting to the attacker all the actions and activities of the infected device. The best way to protect yourself against trojans are those old and good malware protection tips, such as not downloading suspicious files, not browsing suspicious websites, keeping the machine operating system up to date, using complex passwords and protection tools.
Now, if you think your computer is already infected with a trojan, the best way is to scan your system using anti-malware software. There are many of them on the internet, including trustworthy free versions. What is trojan?
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