First of all, i will tell u gurus what a backdoor is.
A back door is a means of access to a computer program that bypasses security mechanisms.
programmer may sometimes install a back door so that the program can be
accessed remotely for troubleshooting or other purposes. However,
attackers often use back doors that they detect or install themselves,
as part of an exploit.
In some cases, a worm is designed to take
advantage of a back door created by an earlier attack. For example,
Nimda gained entrance through a back door left by Code Red.
installed as an administrative tool or a means of attack, a back door
is a security risk, because there are always crackers out there looking
for any vulnerability to exploit. In her
article "Who gets your trust?" security consultant Carole Fennelly uses
an analogy to illustrate the situation: "Think of approaching a
building with an elaborate security system that does bio scans,
background checks, the works. Someone who doesn't have time to go
through all that might just rig up a back exit so they can step out for
a smoke -- and then hope no one finds out about it."
proxy server is a method by which computers talk to each other. An open
proxy is a backdoor that has been opened in a computer network (either
by a friendly or unfriendly method), meaning that the network's
Internet access can be used by authorized personnel within the network
or, if the backdoor is not well-protected or is unknown, by malicious
access from anywhere in the world outside the network. Unknown
backdoors can be installed on a personal computer, desktop or laptop.
purpose of a backdoor is to get around the security measures installed
to protect a computer system and allow access into the system from the
outside. If the backdoor was opened by a piece of spyware, then that
spyware was programmed to sniff out standard security programming and
disable a part of the security program that recognizes and blocks an
unauthorized attempt to access that computer and its network. If the
backdoor was opened by a live person sitting at the computer, then the
recognition pattern was disabled manually.
that open backdoors can be found in emails, ad banners, web sites, and
downloads, sometimes without the knowledge of the website or download
owner, or without the knowledge of the email author. In general, Trojan Horse is used for this purpose.
the past,backdoors were only a problem for IT (Information Technology)
Managers in large corporations, universities, and government facilities
where sometimes hundreds of computers are linked together under one
roof or between geographically separated offices.
and small businesses network their computers, as do libraries, clinics,
rehab hospices, retirement homes, and local law enforcement
departments. Even isolated computers are susceptible to invasion
through the covert installation of malicious programs that open a
passage through the computer's firewall.
There are programs that
spend 24 hours a day surfing the Web in search of unprotected and
unknown backdoors. They run around "pinging" IP's until
they find one that sends back a signal indicating that access can be
granted. A program such as CallerIP scans all the ports (where your
modem or cable or telephone is plugged in) on your system and alerts
you to any malicious backdoors that can provide unauthorized access to
Uses of a backdoor:
I have added a list of all things a hacker can do after installing backdoor in Access computer remotely using backdoor.
As a hacker, backdoor serves you the best in hacking. By using backdoor one can remotely access anyones computer without his permission provided backdoor is installed on it.
Now why it is necessary to hide backdoors??? Backdoors since used by hackers are considered as hacktool by all antiviruses.
antiviruses on detecting any backdoor while scanning, display or delete
it as a virus since a normal computer doesnt contain any backdoor.
Hence, all the backdoor hiding efforts are done to avoid antiviruses
from detecting it. Enjoy HaCkInG!!!!!!!!!!!!!!!!!!!1