About Us

On this page, you can get to know the Course Staff and Administration!


Course Staff

Jayme Hebinck

Jayme Hebinck - Course Lecturer

Hi everyone!

My name is Jayme, I'm 23 years old and live in a studio apartment in Leiden. I'm in the second year of the Master's degree Computer Science, with the specialization: Advanced Computing and Systems, and am currently working on my thesis research in vulnerability detection, which I am doing in the form of an internship at TNO. Besides working hard on finishing my studies, I'm a fan of cybersecurity puzzles and trends, and like going to CTFs. I'm especially interested in the fields of cryptography, forensics and reverse engineering. Besides my fascination with cybersecurity, I like to meet with friends for a drink, travel as much as possible, play videogames from time to time and go on runs to stay fit and healthy. Got any questions for me? Feel free to contact me!

Rajeck Massa

Rajeck Massa - Course Lecturer

Hey all,

My name is Rajeck Massa and together with Jayme and Eleftheria, we run the CTF course! I am currently 22 years old and I’ve finished my Master’s in Computer Science: Advanced Computing and Systems at Leiden. Besides managing the CTF course, I’m working at TNO as a Cyber Security Scientist. In my free time I like to play hockey, play CTF challenges, and go out for drinks with my friends. My interests lie in almost everything that is Computer Science-related, so if you have any questions, just hit me up :)

Course Administration

Eleftheria Makri

Eleftheria Makri - Course Administrator

I am an Assistant Professor at the Leiden Institute of Advanced Computer Science (LIACS), Leiden University. My research interests lie mainly in the field of Applied Cryptography, and Privacy Enhancing Technologies. Specifically, I investigate technologies and applications of Computing on Encrypted Data, such as homomorphic encryption, and multiparty computation. I have experience with applying multiparty computation techniques to tackle challenges in privacy preserving machine learning. I am actively engaged in teaching subjects related to applied cryptography, information security, and cybersecurity management. I support the Leiden CTF initiative from an organizational and administrative perspective, as a LIACS faculty member, and remain responsible for the content.