Hendrik Schmidt is a seasoned security researcher with vast experiences in large and complex enterprise networks. He is a pentester at the German based ERNW GmbH with focus on telecommunication networks. Over the years he evaluated and reviewed all kinds of network protocols and applications. He loves to play with complex technologies and networks and demonstrated several implementation and design flaws. In this context he learned how to play around with core and backhaul networks, wrote protocol fuzzers and spoofers for testing implementations and security architecture. As his profession of pentester, security researcher and consultant he will happily share his knowledge with the audience.