I am Director of the Florida Institute for Cybersecurity Research and a University Term Professor. I also direct the Center for Privacy and Security for Marginalized and Vulnerable Populations (PRISM), a National Science Foundation Frontiers project. I am also a member of the Computing Research Association's Community Computing Council. My research focuses on the security of computing devices, systems, networks, and users of computing technology. Recent work in my group has included securing embedded systems and protocols, mobile device security and privacy, cellular device and network security, side channel analysis, establishing the trustworthiness of data and maintaining its provenance, protection of Internet traffic and examination of censorship, and attacks and defenses against the cloud infrastructure, and needs of marginalized and vulnerable users, particularly populations with impairments and survivors of abuse. Some of my other research areas of interest include securing Internet routing, malware propagation, applied cryptosystems, adversarial machine learning, cyber-physical systems, and trustworthy computing. I received a National Science Foundation CAREER award in 2013, and was named International Educator of the Year within the Herbert Wertheim College of Engineering in 2017 for my work on developing global standards for securing digital financial services in the developing world. From 2017-2022 I was co-chair of the International Telecommunications Union's Security, Infrastructure, and Trust Working Group as part of the Financial Inclusion Global Initiative. I am a Senior Member of the IEEE and ACM. I was technical program co-chair of the 2022 USENIX Security Symposium and conference general chair for ACSAC 2020 and ACSAC 2021. I am also an affiliate faculty member of the Center for Children and Families within the University of Florida's Levin College of Law.