A5029513482- Privacy, Security, and Data Protection
- Mobile Health and mHealth Applications
- COVID-19 Digital Contact Tracing
- Misinformation and Its Impacts
- Social Media and Politics
- Hate Speech and Cyberbullying Detection
- Opinion Dynamics and Social Influence
- Advanced Malware Detection Techniques
- Impact of Technology on Adolescents
- Digital Mental Health Interventions
- Media Influence and Health
- Child Development and Digital Technology
- Media Influence and Politics
- Social and Intergroup Psychology
- Technology Adoption and User Behaviour
- Spam and Phishing Detection
- Internet Traffic Analysis and Secure E-voting
- Media, Gender, and Advertising
- Digital Marketing and Social Media
- User Authentication and Security Systems
Ruhr University Bochum
2019-2023
University of Duisburg-Essen
2020
The COVID-19 pandemic has fueled the development of smartphone applications to assist disease management. Many "corona apps" require widespread adoption be effective, which sparked public debates about privacy, security, and societal implications government-backed health applications. We conducted a representative online study in Germany (n = 1003), US China 1019) investigate user acceptance corona apps, using vignette design based on contextual integrity framework. explored apps for contact...
Disinformation on the Internet has become a major threat to our society. Especially false and inaccurate information in form of news might have detrimental consequences for democratic process when biasing individuals' political views. To combat disinformation, necessary first step is investigate factors relevant individuals detected online. Hence, we conducted an experiment (N = 294) effects message individual differences credibility accuracy perceptions disinformation as well their...
Misconceptions about digital security and privacy topics in the general public frequently lead to insecure behavior. However, little is known prevalence extent of such misconceptions a global context. In this work, we present results first large-scale survey population on misconceptions: We conducted an online with n = 12, 351 participants 12 countries four continents. By investigating influencing factors around eight common (including E2EE, Wi-Fi, VPN, malware), find country residence be...
The present study examined whether peer comments on video-sharing platforms can influence the emotional reactions toward entertaining videos. This question is especially relevant with regard to meaningful videos known increase prosocial motivation and reduce stereotypes. In a 3x3x2 between-subjects online experiment (N = 732), we varied type of video (unity humankind, portrayals human kindness, funny videos) valence (positive, neutral, negative) as well internationality (English vs...
False information on social media poses a crucial threat to our society, and calls for interventions combat this problem are becoming louder. Users themselves may have the potential diminish impact of misleading information. In an online experiment with 3 x between-subjects design (credibility evaluation in user comments: positive vs. negative none) (numerical credibility rating: none), we tested influence bandwagon cues false news post Facebook (N = 240). Contrary prevalent assumptions...
The COVID-19 pandemic has prompted countries around the world to introduce smartphone apps support disease control efforts. Their purposes range from digital contact tracing quarantine enforcement vaccination passports, and their effectiveness often depends on widespread adoption. While previous work identified factors that promote or hinder adoption, it typically examined data collected at a single point in time focused exclusively apps. In this work, we conduct first representative study...
Two studies investigated the effects of exposure to disinformation on citizens' evaluation politicians and impact corrections. Study 1 tested roles message valence relational closeness social media connections sharing disinformation. 2 examined whether corrections networking sites could mitigate influence Results first study indicate a limited persuasive effect disinformation, with negative being more entertaining but potentially less credible than positive Effects in were strong. There was...
End-to-end encryption (E2EE) has become available to end users, but they need understand the nature and limitations of protection it offers benefit in terms protection. Attempts explain cryptography general, E2EE particular, non-specialists have had limited success – part because tried convey detailed expert knowledge. Metaphors are a way communicate benefits more compactly, support construction functional mental models. Previous research that attempted do this for reported mixed results,...
Mobile technologies offer new opportunities for the creation and development of systems crisis communication management. Vital to success using smartphone-based technology volunteers is determine whether privacy issues affect user participation. Thus, an online experiment (N = 217) addressing or people interested in volunteering as well with medical qualifications was conducted investigate influence privacy-related data control options on acceptance a system facilitate volunteer engagement...
The COVID-19 pandemic has prompted countries around the world to introduce smartphone apps support disease control efforts. Their purposes range from digital contact tracing quarantine enforcement vaccination passports, and their effectiveness often depends on widespread adoption. While previous work identified factors that promote or hinder adoption, it typically examined data collected at a single point in time focused exclusively apps. In this work, we conduct first representative study...
Misconceptions about digital security and privacy topics in the general public frequently lead to insecure behavior. However, little is known prevalence extent of such misconceptions a global context. In this work, we present results first large-scale survey population on misconceptions: We conducted an online with n = 12, 351 participants 12 countries four continents. By investigating influencing factors around eight common (including E2EE, Wi-Fi, VPN, malware), find country residence be...
This paper investigates the digital security experiences of four at-risk user groups in Germany, including older adults (70+), teenagers (14-17), people with migration backgrounds, and low formal education. Using computer-assisted telephone interviews, we sampled 250 participants per group, representative region, gender, partly age distributions. We examine their device usage, concerns, prior negative incidents, perceptions potential attackers, information sources. Our study provides first...