Sascha Fahl

Leibniz University


I am head of the information security chair at Leibniz University Hannover, Germany.

I am head of the usable security and privacy research group at CISPA at Saarland University, Germany.

Broadly, I study the intersection of computer security and privacy with human factors. I'm particularly interested in investigating end users, administrators, developers and designers of computer systems and their interdependencies with computer security and privacy mechanisms. My research involves large-scale analyses of the Internet and software repositories to understand the huge challenges humans face when interacting with computer security and privacy mechanisms. To understand root causes, evaluate existing mechanisms and investigate novel ideas, I conduct all kinds of user studies with end users, administrators, and developers of these systems.

I completed my PhD (with distinction) in 2016 supervised by Professor Matthew Smith. My PhD thesis motivates the need for ecologically valid usable-security research for end users and professional IT workers.

My research is regularly published at top-tier venues (e.g. Oakland, CCS, USENIX Security).

If you are interested in my work, wish to collaborate with me, want to request a detailed CV or for whatever other reason, please do not hesitate to contact me.

Selected Publications

Academic Service

Reviewing Activities



USENIX Security





IEEE Security & Privacy (Journal)


Head of the Information Security Chair

Leibniz University Hannover, Germany

Independent Research Group Leader

Usable Security and Privacy Group, CISPA, Saarland University, Germany


CISPA, Saarland University, Germany

Software Engineer Intern

Google, Mountain View, CA

Researcher (Part Time)

FKIE, Fraunhofer, Bonn, Germany

Researcher/PhD Student

DCSec, Leibniz University Hannover, Germany

Research Assistant

Distributed Systems Group, Philipps University Marburg, Germany

Technical Co-Founder

Evenity GmbH, Gießen, Germany