Unmasking Tor users with timing signals
This episode explores a powerful evolution in network traffic analysis, based on the paper "A Practical Congestion Attack on Tor Using Long Paths". While the original "congestion attacks" discovered in 2005 were once capable of unmasking Tor users, the podcast explains how they eventually became obsolete; as Tor grew to thousands of active relays, the network simply became too heavily loaded and noisy for a basic attacker's interference to reliably stand out.
Listeners will discover how researchers resurrected this threat by exploiting a critical design flaw: at the time, Tor allowed users to…
The skinny
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