Authentications, on web applications and service platforms such as the ones that enable
collaborative information sharing and resource management, are typically handled via text …

This paper investigates the trade-off between security and usability in recognition-based
graphical authentication mechanisms. Through a user study (N= 103) based on a real usage …

Mobile devices such as smartphones and tablets are widely used to perform security critical
and privacy sensitive activities, such as mobile banking, mobile health care, mobile …

" Humans are incapable of securely storing high-quality cryptographic keys, and they have
unacceptable speed and accuracy when performing cryptographic operations.(They are …

Usability and security challenges with standard text passwords have led researchers and
professionals to consider alternative authentication schemes. This thesis explores the …

The rapid evolution of heterogeneous and ubiquitous technologies in recent years, along
with the growing demand for automation of services and content delivery, generated a …

In this exploratory study, the main aim was to find,'why do people disclose information when
they are concerned about their privacy?'. The reasons that provide a plausible explanation …

Numerous graphical password schemes have recently been proposed as alternatives to
traditional text password authentication. We provide a comprehensive overview of published …

Abstract Graphical Authentication Systems are a potential replacement or supplement for
conventional authentication systems. Several studies have suggested graphical …

Fallback authentication is the backup authentication method used when the primary
authentication method (eg, passwords, biometrics, etc.) fails. Currently, widely-deployed …