Dr. Johannes Dahse had been exploiting security vulnerabilities in PHP applications for 10 years. He finished his Ph.D. in IT security at the Ruhr-University Bochum, Germany, in 2016. Before that, he pioneered new static code analysis techniques in order to assist with his work as a security consultant. He is a co-founder of RIPS Technologies, a Bochum-based IT security company with a focus on code analysis solutions for web applications, and an active speaker at academic and industry conferences.