Johanna is key researcher at SBA Research and leads the Networks and Critical Infrastructures Security Research Group. Based on Johanna’s interdisciplinary background, her research focuses on security at the intersection of computer science and classical engineering. Recently, she worked on attacks against the power grid and aspects of network security, in particular measuring experiments and IPv6. Among others, she has proven that the IPv6 Privacy Extension as specified in RFC 4941 and implemented in major operating systems is vulnerable.