Dimitrios Bougioukas is a Senior IT Security researcher and instructor at eLearnSecurity and holds a B.Sc. in Computer Science from the Athens University of Economics and Business. For the past 4 years, he has worked as a Business Information Security Engineer and Information Security Analyst for a major financial institution and as a penetration tester within EY's practice. Dimitrios specializes in advanced cyber threat simulation, threat intelligence and purple team tactics. He has been engaged on numerous penetration testing activities against critical infrastructure, web applications and mobile applications. In terms of research, Dimitrios has presented at information security conferences such as BSides and has received acknowledgements from security, telecom and other major companies for finding and reporting vulnerabilities in their web applications, in a responsible manner (IBM Trusteer, LG etc.). In the context of his professional career, his work led to international and regional information security awards in prestigious and highly competitive contests such as Retail Banker International Awards.