Understanding Tor Onion Services and Their Use Cases
HOPE2016-Tor_onion_services
HOPE2016-Tor_onion_services
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Guard Discovery Attack (1/2)<br />
Attacker wants to learn the guard of an onion service, <strong>and</strong> has<br />
signed up a few middle relays on the network:<br />
●<br />
The attacker can force the onion service to create <strong>Tor</strong> circuits.<br />
●<br />
The attacker can figure out if her middle node was picked on a<br />
circuit.<br />
Attacker learns guard node in use