Tor's onion routing to secure and private communications for diverse users
- Tor is a system widely used throughout the world for free and open access to the Internet while protecting anonymity and other properties of communications. We will present a brief introductory overview from Tor's origins as an onion routing project of the Naval Research Laboratory to the present: what it does, what security it provides, who built it, and how it works. We will also describe some of our latest work, providing the first analysis of the security typical Tor users can expect against reasonably realistic adversaries in the Tor network or in the underlying Internet. Our results show that Tor users are far more susceptible to compromise than indicated by prior work.