Global-Scale Measurement of DNS Manipulation

Roya Ensafi is a Research Assistant Professor in Computer Science and Engineering at the University of Michigan, where her research focuses on computer networking and security. She pioneered the use of side-channels to remotely measure network interference and censorship of Internet traffic. Prior to joining Michigan, she was a postdoc at Princeton University. [email protected] Despite the pervasive and continually evolving nature of Internet censorship, measurements remain comparatively sparse. Understanding the scope, scale, and evolution of Internet censorship requires global measurements, performed at regular intervals. We developed Iris, a scalable, accurate, and ethical method to continually measure global manipulation of DNS resolutions. Iris reveals widespread DNS manipulation of many domain names across numerous countries worldwide.