Spectral Analysis of Keystroke Streams: Towards Effective Real-time Continuous User Authentication

Abdullah Alshehri, Frans Coenen, Danushka Bollegala

2018

Abstract

Continuous authentication using keystroke dynamics is significant for applications where continuous monitoring of a user’s identity is desirable, for example in the context of the online assessments and examinations frequently encountered in eLearning environments. In this paper, a novel approach to realtime keystroke continuous authentication is proposed that is founded on a sinusoidal signal based approach that takes into consideration the sequencing of keystrokes. Three alternative time series representations are considered and compared: Keystroke Time Series (KTS), Discrete Fourier Transform (DFT) and Discrete Wavelet Transform (DWT). The proposed process is fully described and analysed using three keystroke dynamics datasets. The evaluation also includes a comparison with the established Feature Vector Representation (FVR) approach. The reported evaluation demonstrates that the proposed method, coupled with the DWT representation, out-performs other approaches to keystroke continuous authentication with a best overall accuracy of 98.24%; a clear indicator that the proposed keystroke continuous authentication using time series analysis has significant potential.

Paper Citation

in Harvard Style

Alshehri A., Coenen F. and Bollegala D. (2018). Spectral Analysis of Keystroke Streams: Towards Effective Real-time Continuous User Authentication.In Proceedings of the 4th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP, ISBN 978-989-758-282-0, pages 62-73. DOI: 10.5220/0006606100620073

in Bibtex Style

@conference{icissp18,
author={Abdullah Alshehri and Frans Coenen and Danushka Bollegala},
title={Spectral Analysis of Keystroke Streams: Towards Effective Real-time Continuous User Authentication},
booktitle={Proceedings of the 4th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,},
year={2018},
pages={62-73},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006606100620073},
isbn={978-989-758-282-0},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 4th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,
TI - Spectral Analysis of Keystroke Streams: Towards Effective Real-time Continuous User Authentication
SN - 978-989-758-282-0
AU - Alshehri A.
AU - Coenen F.
AU - Bollegala D.
PY - 2018
SP - 62
EP - 73
DO - 10.5220/0006606100620073