My research interests are in security, measurement, and diagnosis for networking and large-scale distributed systems. I lead the Northwestern LIST (Lab for Internet and Security Technology). I won the DOE Early CAREER Award in 2005, the DOD (Air Force of Scientific Research) Young Investigator Award in 2007, and the Most Influential Paper Award of ACM ASPLOS in 2018. Based on Google Scholar (papers from different authors with the same names are removed), my papers have been cited about 15,000 times, and the h-index of my publications is 57 as of Dec. 2022. I am a Fellow of IEEE.