Dr. Constantin Catalin Dragan is a Lecturer in Secure Systems at the University of Surrey, United Kingdom. Catalin has received his PhD degree in computer science (with a focus on secret sharing) from Alexandru Ioan Cuza University of Romania in 2014. Prior to this position at Surrey, he was a postdoctoral researcher at LORIA, CNRS, INRIA (France) and University of Surrey (UK). His main research interests are applied cryptography (e.g. secret sharing, attribute-based encryption/signature), provable security, formal verification, privacy-preserving technology, and electronic voting. Catalin has published 15 papers in well-known international conferences (e.g. S&P, CSF, EuroS&P, ACNS, CANS), and high impact journals (e.g. Info. Sci., IEEE Trans. Serv. Comput.).