Leo Li Yan

Biography

Leo ZHAO, also known as Li Yan, is a cybersecurity practitioner and full-stack web developer with a focus on offensive security. As an active member of NuttyShell (The PolyU CTF Team), Leo frequently participates in local and international CTF competitions, specializing in Web Security, Digital Forensics, Reverse Engineering, and Red Teaming. He provides technical support to the team in web infrastructure and hardware development. Beyond his technical interests, Leo is also an amateur radio enthusiast under the callsign VR2ZUN.