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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Avoid being implicated in criminal activity when using Tor

What steps does a Tor user need to take to ensure that he or she doesn't become implicated in other Tor users' criminal activity? For example, I recently came across a Tech Republic article by ...
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How do you properly setup Tor on Windows 7?

How do you properly setup Tor on a Windows 7 box to guarantee that ALL connections will run through Tor?
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Questions on true anonymity

I am going to use Tails to connect to Tor through VPN which has AES-256 data encryption, SHA-256 data authentication and RSA-4096 handshake encryption on my Mac on my school's WiFi (as public as I can ...
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144 views

Decrypting TOR traffic?

Is there any way to decrypt tor traffic from an exit node or relay? I know it's possible to analyze the traffic using something like tcpflow or tcpdump, but it comes back as encrypted giberish. Is ...
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141 views

How do dissidents use Tor?

The most common justification for Tor is that people in countries like China that don't have full protections on free speech can use it to publish dissenting opinions or access foreign information. I ...
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256 views

Can Heartbleed expose a TOR user's IP address?

It is interesting to observe, that TOR exit nodes with out-of-date OpenSSL implementations can themselves be affected by the Heartbleed bug. Can Heartbleed expose a TOR user's IP address merely by ...
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696 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 ...
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523 views

Tor traffic correlation attacks by global adversaries

I recently came across a paper called "Users Get Routed: Traffic Correlation on Tor by Realistic Adversaries" (Aaron Johnson et al) ... which seems to be saying that adversaries (like the NSA) that ...
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366 views

Tor: requesting a tor website

When you have a website that's hosted within the Tor network and one accesses this website with a Tor browser, does this person still use an exit-node ? Or will this be an encrypted connection ...
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77 views

Design differences of tails and whonix concerning virtualization

Tails and Whonix both can run in VirtualBox. Tails doesn't recommends it for security reasons (https://tails.boum.org/doc/advanced_topics/virtualization/index.en.html), for Whonix it seems to be a ...
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207 views

Tor and (SSL) response

I have two questions regarding Tor (onion routing). How do I receive responds from a server when I use onion routing, I've read that, the last node(exit node) will use the same path I used but in the ...
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165 views

Anonymity network like tor, but using the model of torrent

I am thinking about an anonimity network (just as tor), but using some type of guarantee against mis-usage. For example, which torrent does: there is a tracker, which registers who has given how much ...
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680 views

Could TOR nodes collect IPs and filter them to unmask .onion url IP addresses?

I feel that I generally understand TOR onion routing. From what I understand, the node knows the IP it is receiving data from and the IP it is sending data to. So surely a node can collect the IP ...
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159 views

Using Tor browser on a Windows machine

Suppose a person is running a Windows 7/8 operating system. If she/he uses the TOR web-browser, can Microsoft see what they are browsing? Would that not defeat the point of using TOR in the first ...
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56 views

TOR makes multiple connections - why?

When using TOR, I issued this in terminal sudo netstat -punta | grep 443. Output was tcp 0 0 x.x.x.x:y a.a.a.a:443 ESTABLISHED 5769/tor tcp 0 0 x.x.x.x:y ...
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329 views

What is the ideal anonymous workstation setup? [closed]

My goal is to build a perfect stationary workstation from which I can work anonymously. Most instructions on being anonymous usually involve, at some point, moving around and switching from coffee ...
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110 views

Does using DNSSEC in parallel with an anonymisation network decrease your privacy?

When using an anonymous communication network like Tor, to ensure privacy you must route your DNS traffic through the system even if your computer always uses DNSSEC for DNS lookups, would this be ...
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139 views

How is a Tor hidden service authenticated based only on trusting the address?

While being fascinated by how it is possible to create hidden services with Tor, there's a few details around the address collision issue I can't seem to wrap my head around. Quote from Hidden ...
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194 views

Using Facebook via Tor

I think about using Tor for nearly everthing, including Facebook, because FB often tags the users even on other sites, for example per Like-Button, Cookies etc. Now I think about using the Tor ...
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138 views

Use Tor when testing on web apps that allow testing & have bounty programs?

When testing live web apps that allow / encourage security research & disclosure should I be routing my traffic through Tor? Is there a good reason not to? Does it imply a certain malicious ...
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303 views

Multiple gateways (Whonix with Tails)?

I've been reading Whonix's documentation and threads here to be more anonymous and secure. For the best anonymity Whonix recommends having two different computers, one being the gateway and the other ...
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8k views

Why is JavaScript disabled in the Tor Browser Bundle?

Didn't Tor create a local socks proxy? Why doesn't all the Web traffic go over this local socks proxy and why is JavaScript disabled in the Tor Browser bundle? If you would connect with firefox for ...
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How Tor, Privoxy, Vidalia and Polipo are getting together?

I realized that these applications are frequently used together. What is the role of each software in the mission of anonymity and privacy on the web? While I understand Vidalia is a GUI provider, I ...
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725 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: ...
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204 views

In a monitored network, can the admins tell if Tor is being used?

I'm not asking if Tor is secure, I'm asking if an observer can know you are using Tor? For example if a persons ISP or company network monitors traffic would they be able to determine with certainty ...
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374 views

Can Tor nodes infect my computer with malware?

Can I get "hacked" by a Tor node? My computer is sending packets through the Tor nodes and receiving packets from them as well. Can I be sure that there are no Tor nodes that manipulate the packets ...
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470 views

anonymization for scanning and hacking

What kind of anonymization can be used for scanning and exploiting? Of course there are VPNs and VPS, but thats a different story. I know some scanning can be done via TOR, but how can an exploit or ...
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108 views

How secure are Tor circuits?

Sometime ago I was talking with a friend about security of different anonimity software kits. The most famous software we talked about was Tor. While I was talking about the triple secret used in ...
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213 views

In depth TOR encryption design details

I am currently struggling with understanding the details of a connection in tor, mainly because I try to understand PCTCP. In this paper the authors claim that the changes are local to the onion ...
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313 views

Does Tor browser work with college network? [closed]

I'm in a system where my modem connects to a college network (KotNet) that monitors its internet traffic. Since I'd like some privacy I was wondering if a Tor browser would hide my identity or if it ...
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638 views

How is a Tor hidden service immune to exit node attacks?

Let me explain with a nifty diagram: IP/RP <-> bunch of Tor clients/node (Tor circuit) <-> Tor hidden service Wouldn't the last Tor client in the circuit knows that the message is for the Tor ...
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1k views

How to run a Tor exit node securely on a vps

I want to run a TOR exit node on a vps, what security measures do I have to put in place on the vps? I know it will be a huge target for hackers and the three letter word agencies in the USA so I need ...
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187 views

How does a Tor exit node know the public key of the client?

When the Tor exit node executes the client's request and receives a response from the server, it must create an onion cell that can be reversely decrypted along a circuit through the Tor network. ...
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161 views

Can First Hop Man in the Middle be Defeated with TOR or VPN?

I was reading this article about a certain in flight WiFi provider issuing fake SSL certificates for Google. This doesn't really surprise me all that much since I'm well aware of the concept of ...
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133 views

Tor and remote desktop viewing

If I am using tor for anonimity, does this prevent staff at a place of employment or an educational institution from remotely viewing my desktop and seeing what I am doing on Tor? If so how can I get ...
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Can a Tor exit node be reliably identified?

So with my knowledge of Tor, I know that exit nodes are where packets escape the Tor network and enter the "traceable" internet; ie. you can link an attack to an exit node but not the source of the ...
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388 views

Are there any same origin issues (SOP) with TOR?

Are there any issues with Same Origin Policy (SOP) with TOR or *.onion addresses? I'm thinking of cookies Plugins (Silverlight, Flash, Java, etc) Javascript
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205 views

How to get net anonymity while browsing?

I am a college student and am getting free wifi for using the 'Hostel campus" facility ', to access net, I have to put a proxy IP address to my browser. I have heard that they can see what all ...
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384 views

Encryption key exchange for Tor

I've been studying how Tor works - including the great QA "Why can a Tor exit node decrypt data, but not the entry node?". I understand the concept of onion routing and multiple layers of ...
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224 views

Torception: An onion within an onion

With the recent takedown of silkroad, I am pondering on how anonymous you actually can be on the Tor Network. Other more legal or moral uses such as anonymity as a right, or avoiding censorship. These ...
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497 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 ...
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241 views

Why would Tor not be vulnerable to this easy-sounding attack?

I'm thinking of this attack on Tor, which I'm sure won't work, as it is much too simple. Mr. Blackhat sets up lots of intermediate nodes. However, whenever TCP connections come in, they are given ...
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757 views

How actually is Tor hidden service hidden from public?

Let's suppose I have a web server X, listening on port N for instance and configured as a Tor hidden service. How and where is implemented its' hiddenness from public access?
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How was Lulzsec caught? [closed]

I saw that the leader connected to IRC without using TOR and they traced their IP address, but the identity of each member was supposed to be unknown to the others. So even if the leader was acting as ...
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770 views

Interesting article on a vulnerability found in Tor

This article describes how French researchers compromised users using Tor. I'm not sure I fully understand or agree with it. I don't see what Bit Torrent has to do with anything? I mean they start out ...
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122 views

Is there a way to make Tor network your full VPN?

Is there a way to use Tor network as your VPN, proxy or something alike? I have been gone to their website but I've seen just browser (Tor Browser), bridge, relay and exit. Is there way to tell ...
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81 views

How do two Tor relays communicate with one another?

Nodes don't know each other's IP address right? So how do they manage to address one another when it comes to sending data?
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In theory, can a restricted-use ToR network be created with “Verifiable Encryption”? How should I approach learning it?

I have mobile devices (low power, low bandwidth) need to act as a proxy for certain types of P2P encrypted data, such as voting, bitcoin payment, or other specific-purpose usage, and I want to make ...
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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 ...
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804 views

Using tor with SET to bypass firewall policy?

I'm doing a credential harvesting attack using SET from backtrack. I want to sent a spoof email using an open relay server. However, any outbound connection for smtp is blocked by the firewall. I ...