Tor (short for The onion router) is a system intended to enable online anonymity. Tor client software routes Internet traffic through a worldwide volunteer network of servers in order to conceal a user's location or usage from anyone conducting network surveillance or traffic analysis.

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77
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6answers
13k views

How much can I trust Tor?

How much can I depend on Tor for anonymity? Is it completely secure? My usage is limited to accessing Twitter and Wordpress. I am a political activist from India and I do not enjoy the freedom of ...
18
votes
4answers
7k views

Differences between using Tor browser and VPN

I can't quite figure out the differences between using the Tor browser and using a VPN (like concretely proXPN). From what I understand the idea is the same, that they both hide the IP address. The ...
46
votes
2answers
11k views

Best practices for Tor use, in light of released NSA slides

It has been known in the security community that a tool as versatile as Tor is likely the target of intense interest from intelligence agencies. While the FBI has admitted responsibility for a Tor ...
8
votes
4answers
7k views

How is Tor secure?

If Tor is open source and thus its process of concealing your IP is known, then how does it keep anything secure? Couldn't someone look at the source code and figure out how to reverse the routing ...
27
votes
3answers
4k views

Why can a Tor exit node decrypt data, but not the entry node?

Me -> Node A -> Node B -> Node C -> destination The documentation on Tor always states that only the exit node C can see plain text data. How is this possible without me talking to Node C ...
12
votes
8answers
8k views

How anonymous is my setup?

my friend and I are trying to make the most anonymous setup for a computer to do things across the internet without being known the location from which it came. Our setup is as follows: A windows ...
7
votes
2answers
4k views

How safe is Tor from MITM/snooping attacks?

I am behind an HTTP proxy, and I frequently tunnel out via an ssh -D SOCKS proxy (I have access to a couple of outside servers which I can tunnel to) when the HTTP proxy causes problems1. Now, this ...
10
votes
3answers
6k views

Detecting Tor proxy by reading request headers

I am a newbie to the field of security. As I was trying to explore more about HTTP request and response headers, I came across this website which provides a detailed analysis of the request header ...
8
votes
1answer
7k views

Why is it so hard to close onion domains (e.g. The Silkroad)?

A few months ago when I started to experiment with bitcoin I came across The Silkroad (only accessible via Tor) For those who do not know what Tor is and who do not want to waste their time ...
10
votes
1answer
3k views

How are tor hidden nodes/services found?

Tor has "hidden services", which have an address like duskgytldkxiuqc6.onion. Now I was wondering: how is this duskgytldkxiuqc6.onion name mapped to the real server? I don't think there's a central ...
9
votes
5answers
8k views

Is a Tor router really safer than a proxy?

If I use a Tor router to browse the regular internet that it has to leave the Tor network through an exit node. Apparently the exit node has all the information from the original user it came from on ...
7
votes
3answers
260 views

In Tor, what stops the end server from following the breadcrumbs back to their origin?

This would probably require knocking on people's doors, but — couldn't the endpoint ask the exit node what the relay node was, and then ask the relay node what the entry node was, and then ask the ...
1
vote
1answer
591 views

“VPN -> Tor: Go to jail” - What's the logic behind this?

The VPN won't see anymore than your ISP already is. So even if the VPN was logging everything you did, shouldn't it just leave you in status quo? How can it ever compromise your identity, that you ...
2
votes
3answers
490 views

Is there an anti-proxy detection available?

Sites like Wikipedia and Google (among others) don't let you sign up through a proxy or TOR (at least with Google, you have to provide SMS verification if you sign up through proxy.) Somehow they ...
8
votes
4answers
24k views

Advanced techniques for detecting a proxy/getting original IP

In what manner can a website detect my original IP address, even though I'm using a proxy server? I've noticed this with a few sites. There are four proxy methods I've used: Firefox with a proxy ...
29
votes
4answers
2k views

How does Tor protect against an attacker just running thousands of nodes?

Does Tor have any protection against an adversary simply running a very large number of nodes? Someone with the necessary resources could just run thousands of relay nodes (including exit nodes). If ...
31
votes
3answers
11k views

How does “check.torproject.org.” know if you're using TOR?

I'm looking at the results from the following URL and would like to know how does the TOR website "know" that TOR is being used or not. ...
11
votes
2answers
2k views

How does Tor protect against fake entry nodes / total redirection?

There is much material on how to protect yourself from malicous exit nodes, especially by using SSL and minimizing the leakage of identifying information (user-agent, screen size, etc.). However, I ...
12
votes
3answers
2k views

Is the fact that Tor's development is largely government funded cause for concern?

In light of recent events, I've been learning more about Tor, and I have a lot of questions. Here's one. Wikipedia's article states; As of 2012, 80% of the Tor Project's $2M annual budget comes ...
4
votes
1answer
623 views

How much information can be sniffed at tor exit nodes

When someone is sniffing data at a Tor exit node, how much information can be obtained? The IP can be revealed, but can they see everything you do? Does it make a difference if it is encrypted using ...
5
votes
1answer
188 views

About onion packet and onion routing?

I was just wondering if anyone has a diagram showing what is encrypted inside an onion packet when it leaves the sender? When a Tor client sends the packet out, wouldn't the entry onion node know ...
3
votes
3answers
700 views

Attack on Tor with stolen private keys of main nodes

What could attacker do with stolen private keys of main nodes? Tor is based on 10 main nodes: moria1, tor26, dizum, Tonga, etc. IP Addresses of this nodes hard-coded into client. ./src/or/config.c: ...
2
votes
1answer
4k views

How can I get the IP address for a ToR Hidden Service (HSP) with a .onion address?

I'd like to find out the IP address of a given .onion address. Is it possible for me to simply assign an exit node (that I control) to my client and just monitor it to determine what IP address ...
1
vote
2answers
200 views

I'm wondering how I hide my identity online well [duplicate]

what are the different ways to become anonymous. Is quicksilver a good email for that? What are the different options? I know about proxies, Tor, and VPNs. Should I do all three? I like computers but ...
0
votes
1answer
476 views

VPN tunnel in VPN tunnel

I'm wondering if there is an easy way to establish VPN tunnels through other VPN tunnels to get onion routing like properties (sender anonymity). Since VPN builds a tunnel, it should be easy to set up ...
-1
votes
1answer
80 views

Blocking Tor By Trying to Connect to an Entry Node [closed]

So, I had an idea on how to block Tor (or similar tools) from being used on your network (or ISP, which is perhaps more relevant, considering Tor's mission). I'm assuming it wouldn't work (based on ...
-2
votes
1answer
264 views

how to use tor in linux kali with other applications

I want to know how to open applications as nmap and recon-ng through tor first I have kali linux v 1.0.9 and tor I tried using proxychains recon-ng but all I get is that the normal banner of ...
1
vote
1answer
1k views

Which is more secure - a VPN, a proxy-server, Tor, etc.? And why so, exactly? [closed]

I want to know how to ensure the most complete anonymity when browsing the internet and connecting to remote servers: I want to be as anonymous and secret as possible. I don't know exactly how VPNs ...
0
votes
1answer
177 views

Security risk among shared wifi users [duplicate]

I understand that the shared users on a wifi can see each other's HTTP traffic using proper tools. Is it possible for shared users to read HTTPS traffic or encrypted traffic like TOR ?