There are many varieties of computer viruses. Some are only part of the program, others themselves are complete and useful applications. The Trojan also belongs to this type. As a rule, it is intended for implementation in a computer system. Once introduced, the trojan either sends information to the criminal from the infected computer, or destroys the system from the inside and uses it as a βcrime toolβ. A vivid example of such a virus can be called the program waterfalls.scr, which masquerades as a screensaver.
The Trojan program was named after the well-known wooden horse, with which the Greeks captured and destroyed the impregnable Troy. Like the Trojan horse, the eponymous program looks like a harmless and useful gift, but in fact it turns out to be an insidious surprise virus. Prior to installation, it is almost impossible to recognize such a virus. Some Trojans, even after installation, continue to perform the functions of the program under which they were disguised. Such a virus cannot multiply, but by launching it, the user resumes destructive activity every time in his computer. Almost all viruses of this type consist of a client and a server. The server is introduced into the infected system, and the client is used by a criminal
om to control it.
. , , , «» , DDoS-. , , «» .
There are several signs by which infection with a trojan is determined. First of all, you need to pay attention to the startup registry. The βunauthorizedβ program that appears there may turn out to be a virus. An infection is also indicated by an unexpected download of games, applications or videos by the user, as well as arbitrary screenshots. In the process of starting the virus, the computer may reboot itself.
The Trojan can start viewing videos or images, open and close the drive console, or arbitrarily turn off the computer.- . , -, . , , , . .
Qhost. Windows 2600 . . host «» . , «», .