Nudging is a promising approach, in terms of influencing people to make advisable choices
in a range of domains, including cybersecurity. However, the processes underlying the …

Current mobile user authentication systems based on PIN codes, fingerprint, and face
recognition have several shortcomings. Such limitations have been addressed in the …

We provide the first comprehensive study of user-chosen 4-and 6-digit PINs (n= 1220)
collected on smartphones with participants being explicitly primed for device unlocking. We …

Given the nature of mobile devices and unlock procedures, unlock authentication is a prime
target for credential leaking via shoulder surfing, a form of an observation attack. While the …

Immersive Virtual Reality (IVR) is a growing 3D environment, where social and commercial
applications will require user authentication. Similarly, smart homes in the real world (RW) …

Smartphones contain access to user-sensitive information such as contacts, e-mails, e-
payments among others. Therefore, it is imperative that proper smartphone authentication …

Graphical user authentication (GUA) is a common alternative to text-based user
authentication, where people are required to draw graphical passwords on background …

In this article, we provide the first comprehensive study of user-chosen four-and six-digit
PINs (n= 1705) collected on smartphones with participants being explicitly primed for device …

Passwordless authentication is a trending theme in cyber security, while biometrics
gradually replace knowledge-based schemes. However, Personal Identification Numbers …

Persuading people to choose strong passwords is challenging. One way to influence
password strength, as and when people are making the choice, is to tweak the choice …