Helmholtz Center for Information Security

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Latest papers from Helmholtz Center for Information Security

CHI '26Privacy by Design & User Control +2

See Me If You Can: A Multi-Layer Protocol for Bystander Privacy with Consent-Based Restoration

The growing popularity of wearable camera glasses raises pressing concerns about bystanders being recorded without their consent. Most existing privacy-enhancing technologies (PETs) rely on opt-out models that place the burden of privacy protection on bystanders. We conducted a qualitative study on wearers’ and bystan…

CHI '26Context-Aware Computing +2

Privacy & Safety Challenges of On-Body Interaction Techniques

On-body computing systems offer new forms of interaction, but while they are increasingly integrated into everyday contexts, their unique privacy and safety challenges remain understudied. This paper examines these challenges through a two-round interview study with $N = 15$ experts in human-computer interaction, an…

CHI '26Honorable MentionExplainable AI (XAI) +2

"That's another doom I haven't thought about": A User Study on AI Labels as a Safeguard Against Image-Based Misinformation

As generative AI is increasingly contributing to the spread of deceptively realistic misinformation, lawmakers have introduced regulations requiring the disclosure of AI-generated content. However, it is unclear if labels reduce the risk of users falling for AI-generated misinformation. To address this research gap, w…

CHI '26Privacy Perception & Decision-Making +2

From Discovery to Decisions: Archetypal Journeys of Mobile App Users and Their Implications on Privacy

Mobile permission decisions are often studied at the moment a permission request appears. However, our study shows that users’ choices are shaped much earlier, across a multi-stage journey that begins with app-need recognition and unfolds through app discovery, exploration, selection, installation, and first use.…

CHI '25Cybersecurity Training & Awareness

"Perfect is the Enemy of Good": The CISO's Role in Enterprise Security as a Business Enabler

Chief Information Security Officers (CISOs) are responsible for setting and executing organizations' information security strategies. This role has only grown in importance as a result of today's increasingly high-stakes threat landscape. To understand these key decision-makers, we interviewed 16 current and former CI…

CHI '25Passwords & Authentication +1

A Qualitative Study of Adoption Barriers and Challenges for Passwordless Authentication in German Public Administrations

Public administrations provide critical services and manage sensitive data for a country's citizens. Recent phishing campaigns targeting public sector employees highlight their attractiveness as targets. Deploying state-of-the-art authentication technologies, such as FIDO2, can improve overall security. We conducted a…

CHI '25Best PaperUser Research Methods (Interviews, Surveys, Observation) +1

A Qualitative Study on How Usable Security and HCI Researchers Judge the Size and Importance of Odds Ratio and Cohen's d Effect Sizes

Researchers often place a strong focus on statistical significance when reporting the results of statistical tests. However, effect sizes are reported less frequently, and interpretation in the context of the study and the research field is even rarer. These interpretations of effect sizes are, however, necessary to u…

CHI '25Honorable MentionPrivacy by Design & User Control +2

Understanding the Security Advice Mechanisms of Low Socioeconomic Pakistanis

Low socioeconomic populations face severe security challenges while being unable to access traditional written advice resources. We present the first study to explore the security advice landscape of low socioeconomic people in Pakistan. With 20 semi-structured interviews, we uncover how they learn and share security…

CHI '25Best PaperPasswords & Authentication +1

Permission Rationales in the Web Ecosystem: An Exploration of Rationale Text and Design Patterns

Modern web applications use features like camera and geolocation for personalized experiences, requiring user permission via browser prompts. To explain these requests, applications provide rationales—contextual information on why permissions are needed. Despite their importance, little is known about how often ration…

CHI '24Honorable MentionPasswords & Authentication +1

A Comparative Long-Term Study of Fallback Authentication Schemes

Fallback authentication, the process of re-establishing access to an account when the primary authenticator is unavailable, holds critical significance. Approaches range from secondary channels like email and SMS to personal knowledge questions (PKQs) and social authentication. A key difference to primary authenticati…

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https://hci.top/en/institutions/Helmholtz%20Center%20for%20Information%20Security?source=all

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Helmholtz Center for Information Security

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Germany · Europe

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#284

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2021-2026

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28 researchers · 0 collaborators

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Privacy, Security & Trust

Privacy by Design & User Control

AI & Machine Learning Interaction

AI Ethics, Fairness & Accountability

Research Methods & Design Practice

User Research Methods (Interviews, Surveys, Observation)

Wearables & Sensing Technology

Context-Aware Computing

Ethics, Fairness, Social Justice & Inclusion

Empowerment of Marginalized Groups