Tor Network

TheTor network, also known as The Onion Router, provides a system for anonymous communication over the internet. It achieves anonymity by encapsulating user data in multiple layers of encryption and routing it through a sequence of volunteer‑operated relays. Each relay decrypts only enough information to know the previous and next hop, preventing any single node from seeing both the source and destination of the traffic. The resulting circuit changes periodically, further complicating attempts to correlate incoming and outgoing packets. Tor software is released under a free and open‑source license, enabling public audit, modification, and redistribution without restriction. Individuals use Tor to browse the conventional web while concealing their IP address, to publish and access hidden services identified by the .onion top‑level domain, and to evade government or corporate censorship. Journalists, whistleblowers, activists, and researchers rely on the network to protect sources and conduct investigations without exposing their identities. By design, Tor aims to thwart traffic‑analysis attacks, making it a foundational component of the broader privacy‑enhancing technology ecosystem.

The Tor Project, Inc., a nonprofit corporation incorporated in the United States of America, oversees the development, maintenance, and promotion of the Tor software. Its headquarters are situated in the United States, as reflected in the organisation’s official filings. The network’s operational model depends on a global volunteer base that runs relays, contributing bandwidth and CPU resources without central compensation. This distributed architecture means that no single entity controls the majority of the network, enhancing resistance to censorship and takedown attempts. The Tor Project’s core competencies include cryptographic protocol design, guard node selection algorithms, and continuous research into mitigating traffic‑analysis and website‑fingerprinting techniques. In July 2022, the Tor network began enduring a series of prolonged distributed denial‑of‑service attacks that produced intermittent connectivity disruptions and degraded performance for users. These attacks occasionally prevented access to onion services and slowed page loading, prompting the operators to implement evolving defensive measures while limiting public disclosure to protect mitigation strategies. The incident highlighted the importance of adaptive defenses and spurred ongoing work to strengthen the network’s resilience against similar volumetric threats.