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Keylogger


Alternatively referred to as a keystroke logger, a keylogger is a software program or hardware device that is used to monitor and log each of the keys a user types into a computer keyboard. The user who installed the program or hardware device can then view all keys typed in by any computer user. Because these programs and hardware devices monitor the keys typed in, a user can find user passwords and other information a user may not wish others to know about. In the picture to the right, is an example of what a hardware PS/2 and USB keyboard keylogger looks like. These keyloggers attach between the keyboard and the computer.
Additionally, users who are using a hardware device and have access to a computer can connect these devices to the back of a computer, often without a user knowing about them, and then disconnect the device and connect it to another computer to obtain all the information.


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