Keystroke Data Classification for Computer User Profiling and Verification

摘要

The article addresses the issues of behavioral biometrics. Presented research concerns an analysis of a user activity related to a keyboard use in a computer system. A method of computer user profil-ing based on encrypted keystrokes is introduced to ensure a high level of users data protection. User's continuous work in a computer system is analyzed. This type of analysis constitutes a type of free-text analysis. Additionally, an attempt to user verification in order to detect intruders is performed. Intrusion detection is based on a modified k-NN classifier and different distance measures.