Conventional (text-based) passwords have shown patterns such as variations on the
username, or known passwords such as “password”,“admin” or “12345”. Patterns may …

Graphical passwords schemas are becoming more main-stream. There are many different
approaches to graphical passwords, each with its own drawbacks and advantages. There …

Graphical passwords have emerged over the past decade as a technology that may change
the way we authenticate to systems; it is a potential technology to replace typing passwords …

Recognition-based graphical passwords are one of several proposed alternatives to
alphanumerical passwords for user authentication. However, there has been limited work on …

Graphical passwords are a promising alternative to alphanumeric passwords for user
authentication. Recognition-based schemes are commonly used. This paper aims to find the …

We study the impact of selected parameters on the size of the password space for" Draw-A-
Secret"(DAS) graphical passwords. We examine the role of and relationships between the …

Passwords are fundamental security vulnerabilities in many systems. Several researchers
have investigated the trade-off between password memorability versus resiliency to cracking …

In this paper we explore heuristic attacks against graphical password generators. A new
trend is emerging to use user clickable pictures to generate passwords. This technique of …

Recognition-based graphical password have been proposed as an alternative to overcome
the drawbacks of the alphanumeric password in user authentication. A web-based study …

This paper explores the usability of the Ripley's K function and the nearest neighbor
distance, in the detection of clustered graphical passwords in the graphical authentication …