Low-Resource Routing Attacks Against Tor. Bauer, K., McCoy, D., Grunwald, D., Kohno, T., & Sicker, D. October 2007. ![Low-Resource Routing Attacks Against Tor [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Tor has become one of the most popular overlay networks for anonymizing TCP traffic. Its popularity is due in part to its perceived strong anonymity properties and its relatively low latency service. Low latency is achieved through Tor\^as ability to balance the traffic load by optimizing Tor router selection to probabilistically favor routers with highbandwidth capabilities. We investigate how Tor\^as routing optimizations impact its ability to provide strong anonymity. Through experiments conducted on PlanetLab, we show the extent to which routing performance optimizations have left the system vulnerable to end-to-end traffic analysis attacks from non-global adversaries with minimal resources. Further, we demonstrate that entry guards, added to mitigate path disruption attacks, are themselves vulnerable to attack. Finally, we explore solutions to improve Tor\^as current routing algorithms and propose alternative routing strategies that prevent some of the routing attacks used in our experiments.
@conference {bauer:wpes2007,
title = {Low-Resource Routing Attacks Against Tor},
booktitle = {Proceedings of the Workshop on Privacy in the Electronic Society (WPES 2007)},
year = {2007},
month = {October},
publisher = {ACM New York, NY, USA},
organization = {ACM New York, NY, USA},
address = {Washington, DC, USA},
abstract = {Tor has become one of the most popular overlay networks for anonymizing TCP traffic. Its popularity is due in part to its perceived strong anonymity properties and its relatively low latency service. Low latency is achieved through Tor{\^a}s ability to balance the traffic load by optimizing Tor router selection to probabilistically favor routers with highbandwidth capabilities.
We investigate how Tor{\^a}s routing optimizations impact its ability to provide strong anonymity. Through experiments conducted on PlanetLab, we show the extent to which routing performance optimizations have left the system vulnerable to end-to-end traffic analysis attacks from non-global adversaries with minimal resources. Further, we demonstrate that entry guards, added to mitigate path disruption attacks, are themselves vulnerable to attack. Finally, we explore solutions to improve Tor{\^a}s current routing algorithms and propose alternative routing strategies that prevent some of the routing attacks used in our experiments.},
keywords = {anonymity, load balancing, Tor, traffic analysis},
isbn = {978-1-59593-883-1},
doi = {10.1145/1314333.1314336},
url = {http://portal.acm.org/citation.cfm?id=1314336},
author = {Kevin Bauer and Damon McCoy and Dirk Grunwald and Tadayoshi Kohno and Douglas Sicker}
}
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