Study of Intra- and Inter-user Variance in Password Keystroke Dynamics

Blaine Ayotte, Mahesh Banavar, Daqing Hou, Stephanie Schuckers

2021

Abstract

Keystroke dynamics study how users input text via their keyboards. Having the ability to differentiate users, typing behaviors can unobtrusively form a component of a behavioral biometric recognition system to improve existing account security. However, because keystroke dynamics is behavioral biometric typing patterns can change over time. The temporal effects of keystroke dynamics are largely unstudied beyond empirically demonstrating that error rates will be higher for old or outdated profiles. In this paper, the effects on typing patterns over time is investigated in detail. Using a well-known fixed-text keystroke dynamics dataset, we show overall typing time for a provided password “.tie5Roanl” changes significantly over time, decreasing by almost 30%. Principal component analysis (PCA) is used to determine which monographs and digraphs tend to change throughout time. Rarely typed features, such as digraphs with a letter and number, are most likely to change over time, while commonly occurring features such as common digraphs and monographs are much more stable.

Paper Citation

in Harvard Style

Ayotte B., Banavar M., Hou D. and Schuckers S. (2021). Study of Intra- and Inter-user Variance in Password Keystroke Dynamics.In Proceedings of the 7th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP, ISBN 978-989-758-491-6, pages 467-474. DOI: 10.5220/0010235504670474

in Bibtex Style

@conference{icissp21,
author={Blaine Ayotte and Mahesh Banavar and Daqing Hou and Stephanie Schuckers},
title={Study of Intra- and Inter-user Variance in Password Keystroke Dynamics},
booktitle={Proceedings of the 7th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,},
year={2021},
pages={467-474},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010235504670474},
isbn={978-989-758-491-6},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 7th International Conference on Information Systems Security and Privacy - Volume 1: ICISSP,
TI - Study of Intra- and Inter-user Variance in Password Keystroke Dynamics
SN - 978-989-758-491-6
AU - Ayotte B.
AU - Banavar M.
AU - Hou D.
AU - Schuckers S.
PY - 2021
SP - 467
EP - 474
DO - 10.5220/0010235504670474