How Does a Remote Keylogger Work?
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Interception
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The two types of remote keyloggers, hardware and software, work in the same basic manner. The software keylogger runs as a hidden/invisible process that intercepts (logs) all keystrokes typed on the computer on which it is running. The hardware keylogger typically plugs into the keyboard connector on the back of a computer, then the end of the keyboard cable plugs into the hardware keylogger, and all keystrokes are intercepted (logged) by the keylogger device.
Delivery by Software
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The software remote keylogger then delivers the keystrokes, at set intervals, to certain specified destinations, such as to the email address of the person who configured the keylogger to intercept the keystrokes.
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Delivery by Hardware
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The hardware remote keylogger delivers the keystrokes wirelessly, via bluetooth or other standard wireless transmission means (802.11 wireless networking), into the air around the computer.
Recover and Replay
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The person who configured and installed the hardware or software keylogger recovers the keylogger's keystrokes, either by receiving that information via email from the software keylogger, or by receiving the hardware keylogger's keystrokes by being nearby, with a network receiver, keyed to the keylogger's frequency and access code. The recipient of the keylogger information then proceeds to "replay" the keystrokes, in order to determine passwords and other sensitive information that was typed by the person on whose computer the keylogger was installed.
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Resources
- Photo Credit Microsoft, Keyghost
