Sumair Ijaz Hashmi

Doctoral Researcher at CISPA Helmholtz Center for Information Security

💼 On the job market for industry and academic internships.

I am an interdisciplinary HCI researcher working on security, privacy, and safety. My current work focuses on the accessibility of security technology for low socioeconomic populations, aiming to redesign security systems around the practices and realities of the people they are supposed to serve.

I am currently advised by the amazing Katharina Krombholz. Before my PhD, I was a Bachelors student at LUMS, Pakistan where I was advised by Mobin Javed .

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UX Projects

Slide 1 — Training Users to Recognize Persuasion Techniques in Scam Calls

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Additional UX projects are currently under review. Please contact me directly if you would like access to their slide decks.

Research Publications

NDSS 2026

Mapping the Cloud: A Mixed-Methods Study of Cloud Security and Privacy Configuration Challenges

Sumair Ijaz Hashmi*, Shafay Kashif,* Lea Gröber, Katharina Krombholz, Mobin Javed. (* denotes equal contribution)

PDF Talk ▶

ACM CHI 2025 ★ Honourable Mention

Understanding the Security Advice Mechanisms of Low Socioeconomic Pakistanis

Sumair Ijaz Hashmi*, Rimsha Sarfaraz*, Lea Gröber, Mobin Javed, Katharina Krombholz. (* denotes equal contribution)

PDF Talk ▶

Usenix Security 2025

Understanding How Users Prepare for and React to Smartphone Theft

Divyanshu Bhardwaj, Sumair Ijaz Hashmi, Katharina Krombholz, Maximilian Golla.

PDF Talk ▶ Talk at Microsoft Research ▶

Extended Abstracts at ACM CHI 2023

Training Users to Recognize Persuasion Techniques in Vishing Calls

Sumair Ijaz Hashmi*, Niklas George*, Eimaan Saqib, Fatima Ali, Nawaal Siddique, Shafay Kashif, Shahzaib Ali, Nida ul Habib Bajwa, Mobin Javed. (* denotes equal contribution)

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