What's a trojan?

Question

Is it a spy or a virus, or some type of.... uh... something?
(My anti-virus is Kaspersky Internet Security)

Need sources ,please!!! Thank Youuuuuuuu

Answer 1

A destructive program that masquerades as a benign application. Unlike viruses, Trojan horses do not replicate themselves but they can be just as destructive. One of the most insidious types of Trojan horse is a program that claims to rid your computer of viruses but instead introduces viruses onto your computer.

The term comes from the a Greek story of the Trojan War, in which the Greeks give a giant wooden horse to their foes, the Trojans, ostensibly as a peace offering. But after the Trojans drag the horse inside their city walls, Greek soldiers sneak out of the horse's hollow belly and open the city gates, allowing their compatriots to pour in and capture Troy.

Trojan horses are broken down in classification based on how they breach systems and the damage they cause. The seven main types of Trojan horses are:

* Remote Access Trojans
* Data Sending Trojans
* Destructive Trojans
* Proxy Trojans
* FTP Trojans
* security software disabler Trojans
* denial-of-service attack (DoS) Trojans

Answer 2

A program that appears legitimate, but performs some illicit activity when it is run. It may be used to locate password information or make the system more vulnerable to future entry or simply destroy programs or data on the hard disk. A Trojan is similar to a virus, except that it does not replicate itself. It stays in the computer doing its damage or allowing somebody from a remote site to take control of the computer. Trojans often sneak in attached to a free game or other utility. For information about various Trojans that are spread on the Internet

Answer 3

From Symantec
What is the difference between viruses, worms, and Trojans?

From AskLeo
What's the difference between a 'Trojan Horse' a 'Worm' and a 'Virus'?

Answer 4

Trojans is kind like virus, but hides itself in another package, most times they will change their names to something similar to Windows file names so you when checking files names, will not suspect anything unusual/

Answer 5

A trojan appears to be a legitimate program, but when it enters your computer it can be very destructive.

Answer 6

its a virus a bad one at that.Suggestion is buy some dirty books insted of online vewing or this will be a on going problem.all it takes is one Titty and the whole thing is broke.

Answer 7

a trojan is spyware , worm virus that gets into your computer
deferentially something you don't want

Answer 8

It's a virus.
Look at wiki: http://en.wikipedia.org/wiki/Trojan_horse_%28computing%29

Answer 9

it's a small bit of malicious code that is embedded in a another program that you download. that way, it gets onto your hard drive without your knowledge.

Answer 10

http://en.wikipedia.org/wiki/Trojan_horse_(computing)

comes from history. think troy :P
uts a type of virus