• Publications
  • Influence
Graphical passwords: Learning from the first twelve years
TLDR
We provide a comprehensive overview of published research in the area, covering both usability and security aspects as well as system evaluation. Expand
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Influencing users towards better passwords: persuasive cued click-points
TLDR
We use persuasion to influence user choice in click-based graphical passwords, encouraging users to select more random, and hence more secure, click-points. Expand
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Graphical Password Authentication Using Cued Click Points
TLDR
We propose and examine the usability and security of Cued Click Points (CCP), a cued-recall graphical password technique. Expand
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Scale-free geometry in OO programs
TLDR
Though conventional OO design suggests programs should be built from many small objects, like Lego bricks, they are instead built from objects that are scale-free, like fractals, and unlike Lego bricks. Expand
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A second look at the usability of click-based graphical passwords
TLDR
Click-based graphical passwords, which involve clicking a set of user-selected points, have been proposed as a usable alternative to text passwords. Expand
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The Password Life Cycle: User Behaviour in Managing Passwords
TLDR
We identified a “life cycle” of password use, where the user’s central concern is rationing e↵ort to best protect important accounts. Expand
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A Usability Study and Critique of Two Password Managers
TLDR
We present a usability study of two recent password manager proposals: PwdHash (Ross et al., 2005) and Password Multiplier (Halderman et al, 2005). Expand
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The Social Nature of Agile Teams
TLDR
Agile methodologies represent a 'people' centered approach to delivering software. Expand
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User interface design affects security: patterns in click-based graphical passwords
TLDR
We show that the design of the interface impacts whether users select their click-points in predictable patterns and that the security of passwords can be improved through interface design choices. Expand
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A chronic illness characterized by fatigue, neurologic and immunologic disorders, and active human herpesvirus type 6 infection.
OBJECTIVE To conduct neurologic, immunologic, and virologic studies in patients with a chronic debilitating illness of acute onset. DESIGN Cohort study with comparison to matched, healthy controlExpand
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