Tor exit relays are operated by volunteers and together push more than 1 GiB/s of network
traffic. By design, these volunteers are able to inspect and modify the anonymized network …

With Tor being a popular anonymity network, many attacks have been proposed to break its
anonymity or leak information of a private communication on Tor. However, guaranteeing …

Privacy is currently one of the most concerned issues in Cyberspace. Tor is the most widely
used system in the world for anonymously accessing Internet. However, Tor is known to be …

Facing abusive traffic from the Tor anonymity network, online service providers discriminate
against Tor users. In this study, we characterize not only the extent of such discrimination but …

In this paper, we explore traffic analysis attacks on Tor that are conducted solely with middle
relays rather than with relays from the entry or exit positions. We create a methodology to …

In the last decade, Tor proved to be a very successful and widely popular system to protect
users' anonymity. However, Tor remains a practical system with a variety of limitations, some …

Being a volunteer-run, distributed anonymity network, Tor is vulnerable to Sybil attacks. Little
is known about real-world Sybils in the Tor network, and we lack practical tools and methods …

The Tor network is a widely used system for anonymous communication. However, Tor is
known to be vulnerable to attackers who can observe traffic at both ends of the …

Tor is a popular low-latency anonymity network. However, Tor does not protect against the
exploitation of an insecure application to reveal the IP address of, or trace, a TCP stream. In …

Previous attacks that link the sender and receiver of traffic in the Tor network (" correlation
attacks") have generally relied on analyzing traffic from TCP connections. The TCP …