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Honey Onions: A framework for characterizing and identifying misbehaving Tor HSDirs

机译:蜂蜜洋葱:表征和识别Tor HSDirs行为异常的框架

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In the last decade, Tor proved to be a very successful and widely popular system to protect users' anonymity. However, Tor remains a practical system with a variety of limitations, some of which were indeed exploited in the recent past. In particular, Tor's security relies on the fact that a substantial number of its nodes do not misbehave. In this work we introduce, the concept of honey onions, a framework to detect misbehaving Tor relays with HSDir capability. This allows to obtain lower bounds on misbehavior among relays. We propose algorithms to both estimate the number of snooping HSDirs and identify the most likely snoopers. Our experimental results indicate that during the period of the study (72 days) at least 110 such nodes were snooping information about hidden services they host. We reveal that more than half of them were hosted on cloud infrastructure and delayed the use of the learned information to prevent easy traceback.
机译:在过去的十年中,Tor被证明是一个非常成功且广受欢迎的系统,可以保护用户的匿名性。但是,Tor仍然是一个具有各种局限性的实用系统,其中一些确实是最近被利用的。特别是,Tor的安全性依赖于这样一个事实,即它的大量节点不会出现不良行为。在这项工作中,我们介绍了蜂蜜洋葱的概念,这是一个检测具有HSDir功能的Tor继电器行为不当的框架。这允许获得中继之间的不良行为的下限。我们提出了既可以估计侦听HSDirs的数量又可以确定最可能的侦听器的算法。我们的实验结果表明,在研究期间(72天)中,至少有110个这样的节点正在侦听有关其托管的隐藏服务的信息。我们发现,其中有一半以上托管在云基础架构上,并延迟了对所学信息的使用,以防止轻易进行追溯。

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