What is a Trojan Virus?
A Trojan horse, often shortened to Trojan,
is a type of malware designed to provide unauthorized, remote access to
a user’s computer. Trojan horses do not have the ability to replicate
themselves like viruses; however, they can lead to viruses being
installed on a machine since they allow the computer to be controlled by
the Trojan creator. The term gets its name from the Greek story of the
Trojan War, when the Greeks offered the Trojans a peace offering in the
form of a large wooden horse. However, once the Trojans wheeled the
horse behind their closed gates and night fell, the soldiers hidden
inside the horse climbed out and opened the city gates, allowing the
Greek army to infiltrate Troy and capture the city. Trojan horse
software operates the same way, where Troy is your computer and the
horse is the benign-seeming application. Trojan horses can assist an
attacker into turning a user’s computer into a zombie computer, stealing
various data such as credit card information, installing more malware,
keylogging and various other malicious activities. Also, it is possible
for other crackers to control the compromised computer simply by
searching for computers on a network using a port scanner and finding
ones that have already been infected with a Trojan horse. Trojan horses
continue to increase in popularity and currently account for the
majority of known malware found on the web.
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