Items where Author is "Ullah, Abrar"

Number of items: 10.
Article
  • A Study into the Usability and Security Implications of Text and Image Based Challenge Questions in the Context of Online Examination. (2019) Abrar Ullah, Hannan Xiao and Trevor Barker
  • A Dynamic Profile Questions Approach to Mitigate Impersonation in Online Examinations. (2018) Abrar Ullah, Hannan Xiao and Trevor Barker
  • Evaluating Security and Usability of Profile Based Challenge Questions Authentication in Online Examinations. (2014) Abrar Ullah, Hannan Xiao, Trevor Barker and Mariana Lilley
  • Using Challenge Questions for Student Authentication in Online Examination. (2012) Abrar Ullah, Hannan Xiao, Mariana Lilley and Trevor Barker picture_as_pdf
    • Conference or Workshop Item
  • A Classification of Threats to Remote Online Examinations. (2016) Abrar Ullah, Hannan Xiao and Trevor Barker
  • Privacy and Usability of Image and Text Based Challenge Questions Authentication in Online Examination. (2014) Abrar Ullah, Hannan Xiao, Mariana Lilley and Trevor Barker
  • Design, Privacy and Authentication of Challenge Questions in Online Examinations. (2013) Abrar Ullah, Hannan Xiao, Mariana Lilley and Trevor Barker
  • Profile Based Student Authentication in Online Examination. (2012) Abrar Ullah, Hannan Xiao and Mariana Lilley
    • Thesis
  • Security and Usability of Authentication by Challenge Questions in Online Examination. (2017) Abrar Ullah
    • Other
  • Usability of activity-based and image-based challenge questions in online student authentication. (2015) Abrar Ullah, Hannan Xiao and Trevor Barker
    • This list was generated on Thu Jun 18 01:30:13 2026 BST.