Borke Obada-Obieh

schoolUniversity of British Columbiabar_chart#1809 Global Rank

Total Papers

HCI Rank

#1809

Research Areas

Years Active

Recent Publications

Trust, Privacy, and Safety Factors Associated with Decision Making in P2P Markets Based on Social Networks: A Case Study of Facebook Marketplace in USA and Canada

As peer-to-peer (P2P) marketplaces have grown rapidly, concerns related to trust, privacy, and safety (TPS) have also increased. While previous studies have explored these aspects in various P2P marketplaces, there has been limited research on Facebook Marketplace (FM), which is distinguished by dramatic growth and in…

CSCW '222nd AuthorData and Privacy

Users' Expectations, Experiences, and Concerns With COVID Alert, an Exposure-Notification App

We conducted semi-structured interviews with 20 users of the exposure notification app COVID Alert. We identified several types of users' mental models of COVID Alert. Participants' concerns were found to be correlated with their understanding of the app. Compared to a centralized contact tracing app, COVID Alert was…

CSCW '222nd AuthorData and Privacy

Users' Expectations, Experiences, and Concerns With COVID Alert, an Exposure-Notification App

CHI '212nd AuthorPrivacy by Design & User Control +2

On Smartphone Users' Difficulty with Understanding Implicit Authentication

Implicit authentication (IA) has recently become a popular approach for providing physical security on smartphones. It relies on behavioral traits (e.g., gait patterns) for user identification, instead of biometric data or knowledge of a PIN. However, it is not yet known whether users can understand the semantics of t…

CHI '202nd AuthorHonorable MentionSmart Home Interaction Design +1

Amazon vs. My Brother: How Users of Shared Smart Speakers Perceive and Cope with Privacy Risks

With the rapid adoption of smart speakers in people's homes, there is a corresponding increase in users' privacy and security concerns. In contrast to previous studies of users' concerns about smart speakers' divulging private information to their manufacturers, our study focused on investigating users' concerns with…

CHI '201st AuthorAlgorithmic Transparency & Auditability +2

The Burden of Ending Online Account Sharing

Many people share online accounts, even in situations where high privacy and security are expected. Naturally, the sharing of these accounts does not endure forever. This paper reports the privacy and security challenges that people experience when they stop online account sharing. We conducted semi-structured intervi…

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