Bill Marczak

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I am a Senior Research Fellow at Citizen Lab, a co-founder of Bahrain Watch, and a Postdoctoral Researcher at UC Berkeley, where I received my PhD in Computer Science under the advisorship of Vern Paxson. My work focuses on novel technological threats to Internet freedom, including new censorship and surveillance tools. My expertise is in Internet scanning and conducting digital investigations. Coverage of my work has been featured in Vanity Fair, the New York Times, the Washington Post, on CNN, and on Larry King.

Articles

Pay No Attention to the Server Behind the Proxy: Mapping FinFisher’s Continuing Proliferation

This post describes the results of Internet scanning we recently conducted to identify the users of FinFisher, a sophisticated and user-friendly spyware suite sold exclusively to governments. We devise a method for querying FinFisher’s “anonymizing proxies” to unmask the true location of the spyware’s master servers. Since the master servers are installed on the premises of FinFisher customers, tracing the servers allows us to identify which governments are likely using FinFisher. In some cases, we can trace the servers to specific entities inside a government by correlating our scan results with publicly available sources.

China’s Great Cannon

This post describes our analysis of China’s “Great Cannon,” our term for an attack tool that we identify as separate from, but co-located with, the Great Firewall of China. The first known usage of the Great Cannon is in the recent large-scale novel DDoS attack on both GitHub and servers used by GreatFire.org.

Hacking Team’s US Nexus

This report outlines an extensive US nexus for a network of servers forming part of the collection infrastructure of Hacking Team’s Remote Control System. The network, which includes data centers across the US, is used to obscure government clients of Hacking Team. It is used by at least 10 countries ranging from Azerbaijan and Uzbekistan to Korea, Poland and Ethiopia. In addition we highlight an intriguing US-only Hacking Team circuit.

Hacking Team and the Targeting of Ethiopian Journalists

In this report, we identified three instances where Ethiopian journalist group ESAT was targeted with spyware in the space of two hours by a single attacker. In each case the spyware appeared to be RCS (Remote Control System), programmed and sold exclusively to governments by Milan-based Hacking Team.