Circumventing censorship with collage

Sam Burnett, Nicholas G. Feamster, Santosh Vempala

Research output: Contribution to journalArticle

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's effectiveness with a live demonstration of its complete infrastructure.

Original languageEnglish (US)
Pages (from-to)471-472
Number of pages2
JournalComputer Communication Review
Volume40
Issue number4
DOIs
StatePublished - Dec 1 2010

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All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications

Cite this

Burnett, S., Feamster, N. G., & Vempala, S. (2010). Circumventing censorship with collage. Computer Communication Review, 40(4), 471-472. https://doi.org/10.1145/1851275.1851269
Burnett, Sam ; Feamster, Nicholas G. ; Vempala, Santosh. / Circumventing censorship with collage. In: Computer Communication Review. 2010 ; Vol. 40, No. 4. pp. 471-472.
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Burnett, S, Feamster, NG & Vempala, S 2010, 'Circumventing censorship with collage', Computer Communication Review, vol. 40, no. 4, pp. 471-472. https://doi.org/10.1145/1851275.1851269

Circumventing censorship with collage. / Burnett, Sam; Feamster, Nicholas G.; Vempala, Santosh.

In: Computer Communication Review, Vol. 40, No. 4, 01.12.2010, p. 471-472.

Research output: Contribution to journalArticle

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