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dc.contributor.authorUllah, Abrar
dc.contributor.authorXiao, Hannan
dc.contributor.authorBaker, Trevor
dc.date.accessioned2018-06-11T14:08:29Z
dc.date.available2018-06-11T14:08:29Z
dc.date.issued2018-05-31
dc.identifier.citationUllah, A., Xiao, H. and Barker, T. Journal of Grid Computing (2018) 'A Dynamic Profile Questions Approach to Mitigate Impersonation in Online Examinations', Journal of Grid Computing, https://doi.org/10.1007/s10723-018-9442-6en_US
dc.identifier.issn1572-9184 (ESSN)
dc.identifier.urihttp://hdl.handle.net/10369/9637
dc.descriptionThis article was published in Journal of Grid Computing on 31 May 2018, available open access at https://doi.org/10.1007/s10723-018-9442-6en_US
dc.description.abstractOnline examinations are an integral component of many online learning environments, which face many security challenges. Collusion is seen as a major security threat to such examinations, when a student invites a third party to impersonate or abet in a test. This work aims to strengthen the authentication of students via the use of dynamic profile questions. The study reported in this paper involved 31 online participants from five countries over a five-week period. The results of usability and security analysis are reported. The dynamic profile questions were more usable than both the text-based and image-based questions (p < 0.01). An impersonation abuse scenario was simulated using email and mobile phone. The impersonation attack via email was not successful, however, students were able to share answers to dynamic profile questions with a third party impersonator in real time, which resulted in 93% correct answers. The sharing of information via phone took place in real time during an online test and the response time of an impersonator was significantly different (p < 0.01) than a student. The study also revealed that a response time factor may be implemented to identify and report impersonation attacks.en_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofseriesJournal of Grid Computing;
dc.titleA Dynamic Profile Questions Approach to Mitigate Impersonation in Online Examinationsen_US
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1007/s10723-018-9442-6
dcterms.dateAccepted2018-05-09
rioxxterms.versionVoRen_US
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/en_US
rioxxterms.licenseref.startdate2018-06-11


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