Vissarion Moutafis

Located @ Delft, NL - (Not this picture)

I am a PhD Student at TU Delft in Systems Security, under the supervision of Assistant Professor Alexios Voulimeneas and Professor Georgios Smaragdakis, since May 2025. My research interests extend but not limited to Dynamic Analysis, Fuzzing, System-Call Interpositioning and all things systems.

I hold a BSc in Informatics and Telecommunications from the University of Athens and an MSc in Computer Science with a specialization in Cybersecurity from TU Delft. I have industry experience in CENSUS SA, Greece as a Security Intern and Security Engineer.

news

May 01, 2025	Started my PhD in System’s Security @ TU Delft.

selected publications

Clair Obscur: The Light and Shadow of System Call Interposition – From Pitfalls to Solutions with K23

Jesús María Gómez Moreno, Vissarion Moutafis, Antreas Dionysiou, and 4 more authors

In Proceedings of the 26th International Middleware Conference, Dec 2025

Abs DOI

System call interposition is a widely used technique to trace and modify application behavior. Over the years, numerous interposition mechanisms have been proposed, each with distinct strengths and trade-offs. Recently, advances in binary rewriting—specifically targeting x86-64 syscall and sysenter instructions—have led to new techniques that take important steps forward, with some claiming to support general-purpose use.