We introduce context-aware scalable authentication (CASA) as a way of balancing security
and usability for authentication. Our core idea is to choose an appropriate form of active …

As recent incidents have shown, weak passwords are a severe security risk for
authenticating users and granting access to protected resources. Additionally, strong …

There has been a recent rapid increase in the number of Internet of Things (IoT) devices,
providing a wide range of services for smart homes such as surveillance cameras, smart …

User location can act as an additional factor of authentication in scenarios where physical
presence is required, such as when making in-person purchases or unlocking a vehicle …

This paper explores computer security in pervasive computing with focus on user
authentication. We present the concept of Proximity-Based User Authentication, as a …

Mobile users are often faced with a trade-off between security and convenience. Either users
do not use any security lock and risk compromising their data, or they use security locks but …

There has been a rapid increase in the number of Internet of Things (IoT) devices in the last
few years, providing a wide range of services such as camera feeds, light controls, and door …

We design, implement, and evaluate GeoPass: an interface for digital map-based
authentication where a user chooses a place as his or her password (ie, a" location …

We introduce the notion of implicit authentication–the ability to authenticate mobile users
based on actions they would carry out anyway. We develop a model for how to perform …

Mobile two-factor authentication (2FA) has become commonplace along with the popularity
of mobile devices. Current mobile 2FA solutions all require some form of user effort which …