@conference {18556,
	title = {Circumventing censorship with collage},
	booktitle = {Proceedings of the ACM SIGCOMM 2010 conference},
	series = {SIGCOMM {\textquoteright}10},
	year = {2010},
	month = {2010///},
	pages = {471 - 472},
	publisher = {ACM},
	organization = {ACM},
	address = {New York, NY, USA},
	abstract = {Oppressive regimes and even democratic governments restrict Internet access. Existing anti-censorship systems often require users to connect through proxies, but these systems are relatively easy for a censor to discover and block. We explore a possible next step in the censorship arms race: rather than relying on a single system or set of proxies to circumvent censorship firewalls, we use the vast deployment of sites that host user-generated content to breach these firewalls. We have developed Collage, which allows users to exchange messages through hidden channels in sites that host user-generated content. To send a message, a user embeds it into cover traffic and posts the content on some site, where receivers retrieve this content. Collage makes it difficult for a censor to monitor or block these messages by exploiting the sheer number of sites where users can exchange messages and the variety of ways that a message can be hidden. We have built a censorship-resistant news reader using Collage that can retrieve from behind a censorship firewall and show Collage{\textquoteright}s effectiveness with a live demonstration of its complete infrastructure.},
	keywords = {Availability, censorship},
	isbn = {978-1-4503-0201-2},
	doi = {10.1145/1851182.1851269},
	url = {http://doi.acm.org/10.1145/1851182.1851269},
	author = {Burnett,Sam and Feamster, Nick and Vempala,Santosh}
}
