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History of Tor: Onion Routing, Tor Project, Bridges

History of the Tor network: NRL onion routing, the 2002 release, Tor Project founding, onion services v3, and pluggable transports.

Tor is not a product of a scene website. It is the practical continuation of academic and military research on onion routing — public, auditable, and run by volunteers.

Precursors

In the 1990s the U.S. Naval Research Laboratory developed concepts for onion routing: messages are encrypted multiple times and forwarded through intermediate stations so that no station knows the whole path. The goal was protected communication, not a marketplace.

Release and the Tor Project

The first public version appeared in 2002. In 2006 the Tor Project was formed as a nonprofit. Since then it maintains specifications, the Tor client, Tor Browser, and documentation.

The user base is deliberately mixed: journalism, research, everyday privacy, people in censored states. A narrow user group would be easier to isolate.

Important technical leaps

Hidden services / onion services. Services reachable only inside Tor. Version 3 brought longer addresses and modern cryptography.

Bridges and pluggable transports. Where public relays are blocked, transports such as obfs4, meek, or Snowflake hide the appearance. See Pluggable Transport and Bridge.

Tor Browser. Not just a proxy, but a hardened Firefox with a unified fingerprint. Without it, much of the protection is lost.

What this history is not

Media often tell Tor only through criminal marketplaces. That distorts the technical history. Seizures of individual services do not change the protocol’s core idea. They change, at most, which stories get attention.

TorBible documents the technology and its legitimate uses. We do not write a market chronicle or a migration guide.

Further reading

Sources

  • Dingledine, Mathewson, Syverson: Tor: The Second-Generation Onion Router (USENIX 2004)
  • Tor Project: History / About
  • Syverson et al.: Onion Routing papers, NRL

Topics

  • History
  • Tor Project
  • Research