My name is Nikola Todorovic and I am working as lead blockchain engineer at OriginTrail. Interested in cryptography, security and playing CTFs. Currently, I am coach of Serbian national team for European Cybersecurity Challenge (ECSC) and member of Hacklab Belgrade. Other projects: PSSOH conference, DESCON, LiBRE! magazine, CyberHero (Serbian Cybersecurity Challenge)...