Keystroke logging is the practice of tracking (or logging) the keys struck on a keyboard, typically in a covert manner so that the person using the keyboard is unaware that their actions are being monitored. There are numerous keylogging methods, ranging from hardware and software-based to electromagnetic and acoustic analysis.
HISTORY:An early keylogger was written by Perry Kivolowitz and posted to the Usenet news group net.unix-wizards,net.sources on November 17, 1983 [8]. The posting seems to be a motivating factor in restricting access to /dev/kmem on Unix systems. The User-mode program operated by locating and dumping character lists (clists) as they were assembled in the Unix kernel.
APLLICATIONS:
1.Software-based-keyloggers
2.hardware-based-keyloggers
3.wireless keyboard sniffers
4.keyboard overlays
5.acoustic keyloggers
6.Electromagnetic emissions
7.optical surveillance
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