Melih Tas completed B.Sc., M.Sc. and Ph.D. education in Computer Science & Engineering. He has been working as Principal Penetration Tester in a private bank since 2015 in Istanbul, Turkey. He has worked as multiple times award-winning entrepreneur and security expert in a private cyber security R&D company between 2010 and 2015 where he worked on funded projects. Previous to them he also worked in a global troubleshooting center where he found the root causes of telecommunication security incidents and frauds, and design measures to prevent them from happening again. He wrote the National VoIP/UC Security Standard Draft by cooperating with Turkish Standards Institute. He is the author of open-source projects Mr.SIP: SIP-Based Audit and Attack Tool and SIP-DD: SIP-Based DDoS Defense Tools where he has presented in Black Hat Arsenal. He likes to do bug bounty hunting in his spare times. His research interests cover the design and analysis of both offensive and defensive security mechanisms in the fields of VoIP Security, Network Security, and Web/Mobile Application Security.