Mobile phones are most likely the subject of targeted attacks, such as software exploits. The
resources needed to carry out such attacks are becoming increasingly available and, hence …

This paper contributes to our understanding of user-centered attacks on smartphones. In
particular, we investigate the likelihood of so-called shoulder surfing attacks during touch …

In this work, we explore attacker behavior during shoulder surfing. As such behavior is often
opportunistic and difficult to observe in real world settings, we leverage the capabilities of …

Consumer-grade virtual reality head-mounted displays (VR-HMD) are becoming
increasingly popular. Despite VR's convenience and booming applications, VR-based …

Data visualizations have been widely used on mobile devices like smartphones for various
tasks (eg, visualizing personal health and financial data), making it convenient for people to …

The trend of ubiquitous computing goes in parallel with ubiquitous authentication, as users
must confirm their identity several times a day on their devices. Passwords are increasingly …

The availability of consumer-grade virtual reality (VR) devices allows user studies to be
conducted remotely, that is in users' homes. In this way, diverse populations can be reached …

Shoulder surfing has been studied extensively, however, it remains unexplored whether and
how it impacts users. Understanding this is important as it determines whether shoulder …

We present a thorough security analysis of a recent smartwatch authentication mechanism
called CirclePIN, which was considered resilient to several attacks, including shoulder …

This position paper explores the possibilities and challenges of using Virtual Reality (VR) in
remote user studies. Highlighting the immersive nature of VR, the paper identifies key …