Justin's research interests generally fall broadly in the area of systems security. He focuses on understanding high-impact, large-scale problems by building and deploying systems. His dissertation work on package management has been adopted by popular Linux package managers, enhancing the security of millions of Linux servers worldwide. Prof Cappos's TUF security system is being integrated into production use on Ruby and Python, leading to deployment on nearly a billion devices. In his first two years at NYU Poly, he has received numerous awards including five NSF grants for over $5M USD. He performs regular media outreach and was chosen as one of Popular Science's "Brilliant 10" researchers under age 40 for his work on the Seattle testbed. His Seattle testbed is the world's largest academic testbed with thousands of installs, developers, and users.