Keystroke Analysis as a Tool for Intrusion Detection

Keystroke Analysis as a Tool for Intrusion Detection

Daniele Gunetti (University of Torino, Italy) and Claudia Picardi (University of Torino, Italy)
DOI: 10.4018/978-1-61350-129-0.ch009
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In this chapter we discuss the potentialities of Keystroke Analysis as a tool for Intrusion Detection and other security applications, and investigate experimentally how the accuracy of the analysis scales with the increase of the number of individuals involved, a fundamental issue if we want to add Keystroke Analysis to the set of tools that can be used to improve the security of our computers and networks.
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Identifying users through the way they type on a keyboard is difficult, because keystrokes convey little information: just the time when keys are depressed and released. It is true that special keyboards may allow to measure additional features such as the acceleration or the energy impressed to the keystrokes, but such keyboards are normally not available, and are expensive. Moreover, recent sophisticated devices may use virtual keyboards where only digraph latency and keystroke duration could be easily monitored.

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