Date Added: Jul 2011
Internet censorship and surveillance have made anonymity tools increasingly critical for free and open Internet access. Tor, and its associated ecosystem of volunteer traffic relays, provides one of the most secure and widely-available means for achieving Internet anonymity today. Unfortunately, Tor has limitations, including poor performance, inadequate capacity, and a susceptibility to wholesale blocking. Rather than utilizing a large number of volunteers (as Tor does), the authors propose moving onion-routing services to the "Cloud" to leverage the large capacities, robust connectivity, and economies of scale inherent to commercial datacenters.