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dc.contributor.author	Palfrey, John Gorham
dc.contributor.author	Roberts, Hal M.
dc.contributor.author	York, Jillian C
dc.contributor.author	Faris, Robert M
dc.contributor.author	Zuckerman, Ethan Robert
dc.date.accessioned	2011-12-09T20:31:44Z
dc.date.issued	2011-12-09
dc.identifier.citation	Hal Roberts, Ethan Zuckerman, Jillian York, Robert Faris, John Palfrey, 2010 Circumvention Tool Usage Report (2010).	en_US
dc.identifier.uri	http://nrs.harvard.edu/urn-3:HUL.InstRepos:5366727
dc.description.abstract	Circumvention tools allow users to bypass Internet filtering to access content otherwise blocked by governments, workplaces, schools, or even the blocked sites themselves. There are a number of different types of these tools: blocking-resistant tools, simple web proxies, virtual private network (VPN) services, and open HTTP/SOCKS proxies. But every type of circumvention tool provides the same basic functionality — proxying user connections to provide access to otherwise blocked sites. In the following report, we use a variety of methods to evaluate the usage of the first three of these four types of tools to test two hypotheses. First, even though much of the media attention on circumvention tools has been given to a handful of tools — notably Freegate, Ultrasurf, Tor, and Hotspot Shield — we find that these tools represent only a small portion of overall circumvention usage and that the attention paid to these tools has been disproportionate to their usage, especially when compared to the more widely used simple web proxies. Second, even when including the more widely-used simple web proxies, we find that overall usage of circumvention tools is still very small in proportion to the number of Internet users in countries with substantial national Internet filtering.	en_US
dc.language.iso	en_US	en_US
dash.license	LAA
dc.title	2010 Circumvention Tool Usage Report	en_US
dc.type	Research Paper or Report	en_US
dc.description.version	Version of Record	en_US
dash.depositing.author	Palfrey, John Gorham
dc.date.available	2011-12-09T20:31:44Z

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