Nick Feamster

Examining How the Great Firewall Discovers Hidden Circumvention Servers

2015

Recently, the operators of the national censorship infrastructure of China began to employ "active probing" to detect and block the use of privacy tools. This probing works by passively monitoring the network for suspicious traffic, …

A Smart Home is No Castle: Privacy Vulnerabilities of Encrypted IoT Traffic

2017 · arXiv (Cornell University)

The increasing popularity of specialized Internet-connected devices and appliances, dubbed the Internet-of-Things (IoT), promises both new conveniences and new privacy concerns. Unlike traditional web browsers, many IoT devices have always-on sensors that constantly monitor fine-grained …

Augmenting Rule-based DNS Censorship Detection at Scale with Machine Learning

2023

The proliferation of global censorship has led to the development of a plethora of measurement platforms to monitor and expose it. Censorship of the domain name system (DNS) is a key mechanism used across different …