Measuring Information Leakage in Website Fingerprinting Attacks and Defenses

Measuring Information Leakage in Website Fingerprinting Attacks and Defenses
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测量网站指纹攻击和防御中的信息泄漏

DOI:
10.1145/3243734.3243832
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发表时间:
2018
期刊:
Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications Security
影响因子:
--
通讯作者:
Hopper, Nicholas
Hopper, Nicholas
中科院分区:
--
文献类型:
--
作者:
Li, Shuai;Guo, Huajun;Hopper, Nicholas

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Tor提供针对本地或网络对手的低延迟匿名和未经审查的网络访问。由于设计选择最小化流量开销(并增加潜在用户池),Tor允许泄漏有关客户端连接的一些信息。使用这些信息(从中提取的特征)来推断用户访问的网站的攻击称为网站指纹(WF)攻击。我们开发了一种方法和工具来衡量网站泄露信息的数量。我们将此工具应用于从大量网站和WF防御机制中提取的一组全面的特征,使我们能够对WF攻击和防御进行更细粒度的观察。
Tor provides low-latency anonymous and uncensored network access against a local or network adversary. Due to the design choice to minimize traffic overhead (and increase the pool of potential users) Tor allows some information about the client's connections to leak. Attacks using (features extracted from) this information to infer the website a user visits are called Website Fingerprinting (WF) attacks. We develop a methodology and tools to measure the amount of leaked information about a website. We apply this tool to a comprehensive set of features extracted from a large set of websites and WF defense mechanisms, allowing us to make more fine-grained observations about WF attacks and defenses.
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