What are Trojans?

The Trojan horse, also known as Trojan, in the context of computing and software, describes a class of computer threats (malware) that appears to perform a desirable function but in fact performs undisclosed malicious functions. These functions allow unauthorized access to the host computer, giving them the ability to save their files on the user’s computer or even watch the user’s screen and control the computer.

Trojan horses (not technically a virus) can be easily and unwittingly downloaded. For example, if a computer game is designed such that, when executed by the user, it opens a back door that allows a hacker to control the computer of the user, then the computer game is said to be a Trojan horse. However, if the computer game is legitimate, but was infected by a virus, then it is not a Trojan horse, regardless of what the virus may do when the game is executed. The term is derived from the classical story of the Trojan horse.

List of Trojans Parasites:

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» Trojan.Dropper
Trojan.Dropper is a nasty Trojan parasite that is designed by malicious hackers to create a security-free backdoor in your system. Through this backdoor supplementary parasites may be brought into your machine without your consent or authorization whatsoever. In addition, any of your personal or ...
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» Zlob
Zlob (also known as Zlob-X.a, Zlob-XA and Troj/Zlob-XA) is a backdoor parasite that is designed as a hijacking tool. Zlob has the ability to modify essential computer settings, as well as certain registry entries to start at every Windows boot and remain hidden while ...
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» Smitfraud
SmitFraud (also known as W32/SmitFraud.A) is a malicious spyware application that may install itself secretly via adware. SmitFraud may also be brought into your computer bundled with a fake codec (that may include the following: BrainCodec, VideoKeyCodec or PCodec). SmitFraud is designed to inject ...
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» Vundo
Trojan.Vundo, or the Vundo Trojan (also known as Virtumonde or Virtumondo and sometimes referred to as MS Juan) is a Trojan horse that is known to cause popups and advertising for rogue antispyware programs, and other issues including performance degradation and denial of service ...
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» Zeus Trojan
Zeus trojan is a dangerous Trojan horse that has the ability to download and install malicious software without the computer users consent. Zeus will load at startup of Windows where it can infect the boot sectors of the main hard drive potentially causing startup issues. Zeus ...
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» Win32.Agent
Win32.Agent is an adware program that generally downloads unwanted software onto the compromised computer. When Win32.Agent is launched, it copies itself to %WINDIR%System32 under a random name and it will begin running each and every time Windows starts up....
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» Trojan.FakeAlert
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» Security Toolbar 7.1
SecurityToolbar is a nasty toolbar that has the ability to hijack your browser and redirect it to malicious websites that promote corrupt anti-spyware applications. SecurityToolbar is notorious for unauthorized self-installation and transmission of additional parasites onto your computer. SecurityToolbar will also pop-up large amounts ...
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» Trojan.Bancos
Trojan.Bancos is a Trojan virus that may steal personal information data from the compromised computer once it has gained entrance to the system. Trojan.Bancos may also go so far as to steal user names and passwords, leading to identity theft. Trojan.Bancos may be related to Banload ...
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» Trojan.Small.DBY.DB
Trojan.Small.DBY.DB is an incredibly dangerous Trojan horse that poses a threat not only to the security of your personal and financial data, but to your computer system as well. Trojan.Small.DBY.DB is known to spread via infected e-mails, typically those purporting to be electronic ...
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