Back Orifice (often shortened to BO) is a controversial computer program designed for remote system administration. It enables a user to control a computer running the Microsoft Windows operating system from a remote location. The name is a word play on "Microsoft BackOffice Server" software.
"Back Orifice was . . . created in 1998 by hackers from the Cult of the Dead Cow, apparently to highlight Microsoft's lack of security. The backdoor allowed the sender to remotely control and monitor a computer running Windows 95 or 98. Once installed, the program did not show up in the user's task manager, giving it the potential to run undetected. Microsoft issued a patch."
Although Back Orifice has legitimate purposes, such as remote administration, there are other factors that make it suited for less benign business. The server can hide itself from cursory looks by users of the system. As the server can be installed without user interaction, it can be distributed as a payload of a Trojan horse.
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