![]() DNS-over-HTTPS (DoH) resolves this detectability obstacle, by encrypting the entire DNS protocol inside HTTPS. SATAs also expand the value of onion discovery by facilitating self-authenticated access from browsers that do not connect to services via the Tor network.read more read lessĪbstract: While DNS tunneling has shown promise as a censorship circumvention technique, it is limited by the plaintext nature of the DNS protocol, which renders it easily detectable to censors. We describe how the use of SATAs in onion discovery counters these vulnerabilities. Self-authenticating traditional addresses (SATAs) are valid DNS addresses or URLs that also contain a commitment to an onion public key. We also recall previously known hijack and tracking vulnerabilities engendered by use of alternative services that are facilitated and rendered harder to detect if the alternative service is at an onion address. We describe novel vulnerabilities engendered by onion discovery mechanisms recently introduced by Tor Browser that facilitate hijack and tracking of user connections. Because of the mostly random-looking appearance of onion addresses, a number of onion discovery mechanisms have been created to permit routing to an onion address associated with a more meaningful URL, such as a registered domain name. They are thus self-authenticating, one of the security and privacy advantages of onion services, which are typically accessed via Tor Browser. WHO RUNS THE TOR PROJECT SOFTWAREWe show that OUStral evades being detected as a bot by state-of-the-art bot detection software while providing a high-throughput overt data channel for covert data replacement.read more read lessĪbstract: Onion addresses encode their own public key. ![]() Additionally, we implement WebM video replacement for Slitheen to demonstrate the high throughput that OUStral is able to provide. To evaluate OUStral we connect it to an existing traffic replacement system, Slitheen, that replaces media data such as images. ![]() We implement OUStral as a Python library that can be added to an existing traffic-replacement system. WHO RUNS THE TOR PROJECT SIMULATORTo address this, we propose OUStralopithecus (OUStral for short), a web-based Overt User Simulator (OUS) that browses the web as a human would in order to avoid being detected by a censor. Despite the promise of this technique, creating a suitable stream of uncensored overt traffic that is high throughput, fingerprint and identification resistant, and does not overburden the user to generate, is an underexplored area that is critical to traffic replacement's success. In response, traffic replacement, which involves co-opting a steady stream of uncensored overt traffic to serve as a perfect cover for censored covert content, has been developed in an effort to provide undetectable access to the open Internet for those in censored regions. ![]() SATAs also expand the value of onion discovery by facilitating self-authenticated access from browsers that do not connect to services via the Tor network.read more read lessĪbstract: In many parts of the world, censors are continuously increasing their capacity to fingerprint, identify, and block censorship resistance tools to maintain control over what can and can not be accessed over the Internet. ![]() Abstract: Onion addresses encode their own public key. ![]()
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