22 citations · 45 across the 8 of their papers we have counts for
8 papers
Systematic Evaluation and User Study of Privacy of Default Apps in Apple's Mobile Ecosystem
Amel Bourdoucen, Janne Lindqvist
Users need to configure default apps when they first start using their devices. The privacy configurations of the default apps do not always match what users think they have initia…
Quantifying the Security of Recognition Passwords: Gestures and Signatures
Can Liu, Shridatt Sugrim, Gradeigh D. Clark +1
Gesture and signature passwords are two-dimensional figures created by drawing on the surface of a touchscreen with one or more fingers. Prior results about their security have use…
Transforming Speed Sequences into Road Rays on the Map with Elastic Pathing
Xianyi Gao, Bernhard Firner, Shridatt Sugrim +3
Advances in technology have provided ways to monitor and measure driving behavior. Recently, this technology has been applied to usage-based automotive insurance policies that offe…
Of Two Minds, Multiple Addresses, and One History: Characterizing Opinions, Knowledge, and Perceptions of Bitcoin Across Groups
Xianyi Gao, Gradeigh D. Clark, Janne Lindqvist
Digital currencies represent a new method for exchange and investment that differs strongly from any other fiat money seen throughout history. A digital currency makes it possible…
Engineering Gesture-Based Authentication Systems
Gradeigh D. Clark, Janne Lindqvist
Gestures are a topic of increasing interest in authentication and successful implementation as a security layer requires reliable gesture recognition. So far much work focuses on n…
Text Entry Method Affects Password Security
Yulong Yang, Janne Lindqvist, Antti Oulasvirta
Text-based passwords continue to be the prime form of authentication to computer systems. Today, they are increasingly created and used with mobile text entry methods, such as touc…
User-Generated Free-Form Gestures for Authentication: Security and Memorability
Michael Sherman, Gradeigh Clark, Yulong Yang +5
This paper studies the security and memorability of free-form multitouch gestures for mobile authentication. Towards this end, we collected a dataset with a generate-test-retest pa…
Elastic Pathing: Your Speed is Enough to Track You
Bernhard Firner, Shridatt Sugrim, Yulong Yang +1
Today people increasingly have the opportunity to opt-in to "usage-based" automotive insurance programs for reducing insurance premiums. In these programs, participants install dev…