Concerns new Tor weakness is being exploited prompt dark market shutdown

A dark market website that relies on the Tor privacy network to keep its operators anonymous is temporarily shutting down amid concerns attackers are exploiting a newly reported weakness that can identify server locations.

As Ars reported last month, the technique requires the adversary to control the Tor entry point for the server hosting the hidden service. It also requires the attacker to have previously collected unique network characteristics that can serve as a fingerprint for that particular service. Still, once that bar is met, the attack has an 88-percent accuracy rate. Hidden services are sites that are accessible only from within the Tor, which conceals IP addresses of servers and users.