How much anonymity does network latency leak?

Nicholas Hopper Eugene Y. Vasserman Eric Chan-Tin How much anonymity does network latency leak? 82-91 2007 ACM Conference on Computer and Communications Security http://doi.acm.org/10.1145/1315245.1315257 conf/ccs/2007 db/conf/ccs/ccs2007.html#HopperVC07