TOR PROJECT

The Tor network is a group of volunteer-operated servers that allows people to improve their privacy and security on the Internet. Tor’s users employ this network by connecting through a series of virtual tunnels rather than making a direct connection, thus allowing both organizations and individuals to share information over public networks without compromising their privacy. Along the same line, Tor is an effective censorship circumvention tool, allowing its users to reach otherwise blocked destinations or content. Tor can also be used as a building block for software developers to create new communication tools with built-in privacy features.

Individuals use Tor to keep websites from tracking them and their family members, or to connect to news sites, instant messaging services, or the like when these are blocked by their local Internet providers. Tor’s onion services let users publish web sites and other services without needing to reveal the location of the site. Individuals also use Tor for socially sensitive communication: chat rooms and web forums for rape and abuse survivors, or people with illnesses.

Journalists use Tor to communicate more safely with whistleblowers and dissidents. Non-governmental organizations (NGOs) use Tor to allow their workers to connect to their home website while they’re in a foreign country, without notifying everybody nearby that they’re working with that organization.

Groups such as Indymedia recommend Tor for safeguarding their members’ online privacy and security. Activist groups like the Electronic Frontier Foundation (EFF) recommend Tor as a mechanism for maintaining civil liberties online. Corporations use Tor as a safe way to conduct competitive analysis, and to protect sensitive procurement patterns from eavesdroppers. They also use it to replace traditional VPNs, which reveal the exact amount and timing of communication. Which locations have employees working late? Which locations have employees consulting job-hunting websites? Which research divisions are communicating with the company’s patent lawyers?

A branch of the U.S. Navy uses Tor for open source intelligence gathering, and one of its teams used Tor while deployed in the Middle East recently. Law enforcement uses Tor for visiting or surveilling web sites without leaving government IP addresses in their web logs, and for security during sting operations.

The variety of people who use Tor is actually part of what makes it so secure. Tor hides you among the other users on the network, so the more populous and diverse the user base for Tor is, the more your anonymity will be protected.

Why we need Tor

Using Tor protects you against a common form of Internet surveillance known as “traffic analysis.” Traffic analysis can be used to infer who is talking to whom over a public network. Knowing the source and destination of your Internet traffic allows others to track your behavior and interests. This can impact your checkbook if, for example, an e-commerce site uses price discrimination based on your country or institution of origin. It can even threaten your job and physical safety by revealing who and where you are. For example, if you’re travelling abroad and you connect to your employer’s computers to check or send mail, you can inadvertently reveal your national origin and professional affiliation to anyone observing the network, even if the connection is encrypted.

How does traffic analysis work? Internet data packets have two parts: a data payload and a header used for routing. The data payload is whatever is being sent, whether that’s an email message, a web page, or an audio file. Even if you encrypt the data payload of your communications, traffic analysis still reveals a great deal about what you’re doing and, possibly, what you’re saying. That’s because it focuses on the header, which discloses source, destination, size, timing, and so on.

A basic problem for the privacy minded is that the recipient of your communications can see that you sent it by looking at headers. So can authorized intermediaries like Internet service providers, and sometimes unauthorized intermediaries as well. A very simple form of traffic analysis might involve sitting somewhere between sender and recipient on the network, looking at headers.

But there are also more powerful kinds of traffic analysis. Some attackers spy on multiple parts of the Internet and use sophisticated statistical techniques to track the communications patterns of many different organizations and individuals. Encryption does not help against these attackers, since it only hides the content of Internet traffic, not the headers.

Staying anonymous

Tor can’t solve all anonymity problems. It focuses only on protecting the transport of data. You need to use protocol-specific support software if you don’t want the sites you visit to see your identifying information. For example, you can use Tor Browser while browsing the web to withhold some information about your computer’s configuration.

Also, to protect your anonymity, be smart. Don’t provide your name or other revealing information in web forms. Be aware that, like all anonymizing networks that are fast enough for web browsing, Tor does not provide protection against end-to-end timing attacks: If your attacker can watch the traffic coming out of your computer, and also the traffic arriving at your chosen destination, he can use statistical analysis to discover that they are part of the same circuit.

The future of Tor

Providing a usable anonymizing network on the Internet today is an ongoing challenge. We want software that meets users’ needs. We also want to keep the network up and running in a way that handles as many users as possible. Security and usability don’t have to be at odds: As Tor’s usability increases, it will attract more users, which will increase the possible sources and destinations of each communication, thus increasing security for everyone. We’re making progress, but we need your help. Please consider running a relay or volunteering as a developer.

Ongoing trends in law, policy, and technology threaten anonymity as never before, undermining our ability to speak and read freely online. These trends also undermine national security and critical infrastructure by making communication among individuals, organizations, corporations, and governments more vulnerable to analysis. Each new user and relay provides additional diversity, enhancing Tor’s ability to put control over your security and privacy back into your hands.

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Last Transactions

6+confirmations 

6aa21b10cc28ea4410db69371deda4bc6bd992947147188b4a0923cece75df41

1 Input Consumed

0.00126774 BTC from
33uA6Jd1iPbDX5TNpgZx8hZCXTv3HS98HU(output)

1 Output Created

0.0012 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(unspent)

Value Transacted :0.0012 BTC

6+confirmations 

c126b52a9b223f6e32c079612a2ea8fcb0d0da4f719116da011c4dafbd38a1a8

1 Input Consumed

0.007161 BTC from
1uZjoNizXWJrHjSXSmMGbJ9g13ArbJRuT(output)

1 Output Created

0.00703102 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(unspent)

Value Transacted :0.00703102 BTC

6+confirmations 

a3f74f0c2aed4349b05880a43dccc288290697e713346bc9538e89e4526aff93

4 Inputs Consumed

0.015 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.00557514 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.00086346 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.000649 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)

1 Output Created

0.02162332 BTC to
3BupKqdJfGua8otwMdV75Q6EPJA6K7XW2V(unspent)

Value Transacted :0.02162332 BTC

6+confirmations 

7be117fdcbdd621b9e2d19d0aacca4a7009f00c9909f858883a3122f8e212324

1 Input Consumed

0.48587346 BTC from
bc1qk0refygxpy7z8jwzp5epnq9hfly6j9kqa9jx5u(output)

2 Outputs Created

0.00086346 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(spent)
0.485 BTC to
1Q3K8PoiV7zXGGC44LzitcCzrZvJDcxS7K(unspent)

Value Transacted :0.48586346 BTC

6+confirmations 

7933d484a1d198ab342b3807d094ab6c4e6b1bfd33e025f1d9a8836eab625335

1 Input Consumed

38.76056691 BTC from
19iqYbeATe4RxghQZJnYVFU4mjUUu76EA6(output)

2 Outputs Created

0.000649 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(spent)
38.75956791 BTC to
19iqYbeATe4RxghQZJnYVFU4mjUUu76EA6(spent)

Estimated Value Sent :0.000649 BTC(more)

"Estimated Value Sent" excludes known change addresses.For example, let's say we have a single transaction where address A sends 1 BTC to address B and also 1 BTC back to address A as change, then only 1 BTC is estimated to have been sent.Proper use of a new change address for each transaction (like all HD wallet implementations) obfuscate this feature.

6+confirmations 

8756782e9a8eb04816c02475efbe0e3769522b17b4489432c20fa6e21e046906

1 Input Consumed

0.06286287 BTC from
1BqJJrRwvGLFnmv9DwnVhazF3c6JzenrBo(output)

2 Outputs Created

0.00557514 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(spent)
0.05728092 BTC to
1AkuDPFNHiMFnZkmfwyZs4hyBydGZJ5eRH(spent)

Value Transacted :0.06285606 BTC

6+confirmations 

6f9ee7de31489e173b28069a0be5a7c178907bc4da8eb63ee146c3531abdbc3c

9 Inputs Consumed

0.00370498 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.00112514 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.00061915 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.00058997 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
0.00056727 BTC from
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(output)
...

1 Output Created

0.00591149 BTC to
3G4Pc5Yhh7MaGa3ovhU62kZFC4qfzCuu2C(unspent)

Value Transacted :0.00591149 BTC

6+confirmations 

39a57e2503787bbae6a5cbb2b0439bc89f827fafbff6cb266b628924ec80567d

1 Input Consumed

0.09804303 BTC from
bc1q6e7vqevjerung8xe7gena8vmqjfwhvcfn07j7l(output)

2 Outputs Created

0.015 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(spent)
0.08294698 BTC to
bc1qea8894xv46sxn3xk4v7m8evusl8089qd4jc3el(unspent)

Value Transacted :0.09794698 BTC

6+confirmations 

ea2bbc81305d4fac938c86ac69bb7391e29a57c924ec62b4d5ebdf67ee2636f6

1 Input Consumed

0.00113202 BTC from
bc1qvfftan44s4kwm3aqljlex2nyelcht7q0ttrawg(output)

1 Output Created

0.00112514 BTC to
1JADsmDFX9d2TXis63S9F9L8eDAXwJmnWE(spent)

Value Transacted :0.00112514 BTC

6+confirmations 

b19ff6fcde10d115b9d41d2660bd6d5aa6ccc3238eb39e529b7bf436b51c720b

1 Input Consumed

0.00739642 BTC from
bc1qtj5ksy5e49l42zrvet7sz7rlkmgj9dx6t7rncy(output)

20 Outputs Created

0.00012341 BTC to
1exodusdyqXD81tS8SkcLhyFj9ioxWsaZ(unspent)
0.00012341 BTC to
13eFYqnrB4pMXxyDn9hu2QxHfDtSfL4GvK(spent)
0.00012341 BTC to
13nUbfsLUzK9Sr7ZJgDRHNR91BJMuDuJnf(spent)
0.00012341 BTC to
14d2as82kQ3mRoCSyrnHNoDi8PkFvxMMgP(unspent)
0.00012341 BTC to
15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18(unspent)
...

Value Transacted :0.00711217 BTC