TrOjan TrOjan WhaT is It...???

Trojan ( bad ) Beware !!
Its All Explained Here

Trojan horse well this term has many meanings .In the context of computer software, a Trojan horse is a malicious program that is disguised as or embedded within legitimate software. The term is derived from the classical myth of the Trojan Horse. They may look useful or interesting (or at the very least harmless) to an unsuspecting user, but are actually harmful when executed. Often the term is shortened to simply Trojan, even though this turns the adjective into a noun, reversing the myth (Greeks were gaining malicious access, not Trojans).

There are two common types of Trojan horses. One, is otherwise useful software that has been corrupted by a cracker inserting malicious code that executes while the program is used. Examples include various implementations of weather alerting programs, computer clock setting software, and peer to peer file sharing utilities. The other type is a standalone program that masquerades as something else, like a game or image file, in order to trick the user into some misdirected complicity that is needed to carry out the program's objectives.

Example of a simple Trojan horse A simple example of a trojan horse would be a program named "waterfalls.scr.exe" claiming to be a free waterfall screensaver which, when run, instead begins erasing all the files on the computer.

Types of Trojan horses Trojan horses are almost always designed to do various harmful things, but could be harmless. Examples are erasing or overwriting data on a computer. encrypting files in a cryptoviral extortion attack. corrupting files in a subtle way. upload and download files. allowing remote access to the victim's computer. This is called a RAT. (remote administration tool) spreading other malware, such as viruses. In this case the Trojan horse is called a 'dropper' or 'vector'. setting up networks of zombie computers in order to launch DDoS attacks or send spam. spying on the user of a computer and covertly reporting data like browsing habits to other people (see the article on spyware). make screenshots. logging keystrokes to steal information such as passwords and credit card numbers (also known as a keylogger). phish for bank or other account details, which can be used for criminal activities. installing a backdoor on a computer system. opening and closing CD-ROM tray