Trojan

Trojan is a program that seemed as the program works as well.

Though he hides a dangerous secret functions of the system. Trojan is also sometimes used as a substitute for other malware such as bot, backdoor trojan and trojan downloader.

Problems caused:
Trojans often look like ordinary program that can be used for productivity. He also frequently claim to have only a single function for a particular purpose. However, unbeknownst to the victim, he was running the other functions such as data theft or search for system weaknesses. This information is then sent to the hacker without the knowledge of the victim.

Trojan many distributed pirated applications, including keygenerator (to create a false license number) and the like. The number of trojan is also growing rapidly compared to the virus because of its ability to spread independent.

Prevention / neutralization:
Trojans can be recognized easily by antivirus or antimalware applications with the latest updates. Advised to always check the application downloaded from the internet using a program / antivirus applications.

from : http://www.infokomputer.com