Backdoor

Backdoor or "back door", in the security computer system, refers to mechanisms that can be used to access the system, application, or network, apart from the general mechanisms that are used (through the logon process, or other authentication process). Is also known as a back door.

Backdoor initially created by computer programmers as the mechanism that allows them to obtain special access to them in the program, often used to justify and improve the code in the program that they created when a crash occurs due to a bug.

The term now used by the backdoor hacker-hacker to refer to a mechanism that allows the system can access peretas back a system that has been attacked before the process without the need to exploit the system or network, as it did the first time. Generally, once a network has been attacked by using the exploit (to a Handling / Vulnerability), an attacker will cover all jejaknya in the system concerned with modifying the file system record (log) or delete it, and then menginstalasikan a backdoor in the form of a software or to add a special user account that has rights to access the network administrator or system administrator. If the owner and the network or system to realize that the system has been attacked, and then close all Handling is known in the system (but does not detect the existence of the backdoor installed), still before the attacker will be able to access the system, discovered by the owner without the network, especially after registering himself as a legitimate user in the system or network. Have the right as the network administrator, he can do things that can damage the system or remove the data. In cases like the above, a commonly used way is to make re-installation of the system or network, or with restoration of the backup / backup that is still clean from the backdoor.