This report provides a detailed, mixed methods analysis of Information controls related to the Yemen armed conflict, with research commencing at the end of 2014 and continuing through October 20, 2015. The research confirms that Internet filtering products sold by the Canadian company Netsweeper have been installed on and are presently in operation in the state-owned and operated ISP YemenNet, the most utilized ISP in the country.

The paper presents an initial methodology for identifying and confirming the use of URL filtering products around the world.

In April 2010, China Telecom’s network announced incorrect paths to 50,000 IP prefixes, referred to as a “hijack”. The politically sensitive nature of some of the IP prefixes that were hijacked brought this incident to the attention of the US government. It raises many important questions about how we characterize and reason about large-scale routing incidents when they occur.