My research interests centre on networked systems, particularly in the context of security and measurement. Currently, I am working on the design, scalability and applications of blockchains with George Danezis and Sarah Meiklejohn as part of the EU DECODE and EPSRC Glass Houses projects. I am a Research Scientist at Chainspace, and a member of IC3 (Initiative for cryptocurrency and Contract) and The UCL Centre for Blockchain Technologies (CBT). I also have a long-standing research interest in characterizing various forms of information control (e.g., censorship, discrimination and misinformation) to enable transparency and accountability; for this work I was named to MIT Technology Review Innovators Under 35. I received my Ph.D. degree (Characterization of Internet Censorship from Multiple Perspectives) from the University of Cambridge in 2017 under the supervision of Jon Crowcroft (and co-supervised by Steven Murdoch, Vern Paxson, and Ross Anderson) where I was an Honorary Cambridge Trust Scholar, and was awarded the Mary Bradburn Scholarship by the British Federation of Women Graduates for my research work. Previously, I collaborated with ICSI (UC Berkeley), and made research contributions to NSF projects on developing empirical basis for censorship and socio-economic perspectives on Internet security. I also worked on Intrusion Detection Systems (Bro), and wrote an open-source software for botnet detection (BotFlex). I received my Master's degree in Computer and Communication Security from National University of Science and Technology, Pakistan in 2013 for which I was awarded the President's Gold Medal.