文章基本信息

标题：Tweeting with Hummingbird: Privacy in Large-Scale Micro-Blogging OSNs
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作者：Emiliano De Cristofaro ; Claudio Soriente ; Gene Tsudik 等
期刊名称：Bulletin of the Technical Committee on Data Engineering
出版年度：2012
卷号：35
期号：4
出版社：IEEE Computer Society
摘要：In recent years, micro-blogging Online Social Networks (OSNs), such as Twitter, have taken the world bystorm, now boasting over 100 million subscribers. As an unparalleled stage for an enormous audience,they offer fast and reliable diffusion of pithy tweets to great multitudes of information-hungry and always-connected followers with short attention spans. At the same time, this appealing information gatheringand dissemination paradigm prompts some important privacy concerns about relationships betweentweeters, followers and interests of the latter.In this paper, we assess privacy in today's Twitter-like OSNs and describe an architecture and a trialimplementation of a privacy-preserving service called Hummingbird – a variant of Twitter that protectstweet contents, hashtags and follower interests from the (potentially) prying eyes of the central server. Weargue that, although inherently limited by Twitter's mission of scalable information dissemination, theattainable degree of privacy is valuable. We demonstrate, via a working prototype, that Hummingbird'sadditional costs are tolerably low. We also sketch out some viable enhancements that might offer evenbetter privacy in the long term