Valentin Leon is a Technical Director and has been with NCC Group for 5 years, performing penetration testing for a broad range of clients and technologies. Valentin leads engagements testing web applications of varying backends including .Net, Java, C/C++, and Python; internal and external network assessments; architecture and hardware reviews; protocol analyses; and mobile application reviews. Valentin has performed security research in the following areas: RFID, LTE, iOS, and IMAP.