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Authors: Abdullah Alshehri ; Frans Coenen and Danushka Bollegala

Affiliation: University of Liverpool, United Kingdom

Keyword(s): Keystroke Time Series, Continuous Authentication, Keystroke Streams, Behavioral Biometric.

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 keystr oke 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. (More)

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Paper citation in several formats:
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 - ICISSP; ISBN 978-989-758-282-0; ISSN 2184-4356, SciTePress, pages 62-73. DOI: 10.5220/0006606100620073

@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 - ICISSP},
year={2018},
pages={62-73},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006606100620073},
isbn={978-989-758-282-0},
issn={2184-4356},
}

TY - CONF

JO - Proceedings of the 4th International Conference on Information Systems Security and Privacy - ICISSP
TI - Spectral Analysis of Keystroke Streams: Towards Effective Real-time Continuous User Authentication
SN - 978-989-758-282-0
IS - 2184-4356
AU - Alshehri, A.
AU - Coenen, F.
AU - Bollegala, D.
PY - 2018
SP - 62
EP - 73
DO - 10.5220/0006606100620073
PB - SciTePress

- Science and Technology Publications, Lda.
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