Dr. Ryan Johnson is a Senior Director, R&D at Quokka (formerly Kryptowire). His research interests are static and dynamic analysis of Android apps and reverse engineering. He is a co-founder of Quokka and has presented at DEF CON, Black Hat (USA, Asia, & MEA), IT-Defense, and @Hack. His research in Android security has been assigned dozens of CVEs and is responsible for discovering the Adups spyware that affected millions of Android smartphones.