Questions tagged [security]

Information about network security

86 questions with no upvoted or accepted answers
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Tor hiden service ratelimits

While we are building a denial of service protection using and onionbalance for our HSv3 resources was discovered an interesting thing: during testing with simulated DDoS (launched 1000 tor client ...
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289 views

Building an Apparmor Profile

I generated an apparmor profile for the tor binary that comes bundled in Ricochet: # Last Modified: Sun Apr 2 2017 #include <tunables/global> /ricochet/*-ricochet/tor { #include <...
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What purpose does congestion control achieve, and how does it work?

I am trying to understand exactly how the different solutions for the congestion control mechanism work and what purpose they achieve. With "the solutions" I mean the circuit level throttling and the ...
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176 views

sudden change in port number of closest relay when changed to pasing traffic of Firefox through Tor network

I understand to obtain the complete successful results out of Tor, is it mandatory to use Tor browser bundle. But sometimes, for a general user, Firefox is much tempting to use for many reasons as a ...
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86 views

How do onion services host anonymous chatrooms and what level of anonymity is present when using one?

There are many onion services such as Talk to John Doe and OnionChat which have anonymous chatrooms. How do they connect random users and let them chat with each other. How anonymous are users when ...
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131 views

Can you have a setup with both VPN over Tor and Tor over VPN

Is it possible to first connect to a VPN (like NordVPN or another VPN which supports VPN over Tor) that is preconfigured for Tor and then connect to a VPN once you are browsing in Tor to encrypt both ...
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222 views

How to be more anonymous and safe on Tor

Is it possible to more anonymous and on Tor than this setup and browsing method: Using Tails OS from USB which stores no data on hard drive Using Tor browser on safest mode Always automatically ...
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171 views

Firefox Multi-Account Containers on Tor

Is there a way to install Firefox Multi-Account Containers addon and/or other container-based extensions on Tor Browser? Or, case it's not possible, is there any good reason for that, like a security ...
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22 views

Can a router fake the communication to the next nodes on the path?

I have a theoretical question for understanding the safety of TOR: When I connect to a node A as a first router on my path and I tell him to forward a handshake message to a second node, then how do ...
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63 views

What is the difference between the fingerprint and v3ident in auth_dirs.c

auth_dirs contains a list of trusted directory authorities and consists of entrys such: "moria1 orport=9101 " "v3ident=D586D18309DED4CD6D57C18FDB97EFA96D330566 " "128.31.0.39:9131 9695 DFC3 5FFE ...
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51 views

using autentication with torsocks --address

On Linux, I noticed I can run torsocks by specifying --address so that it connects to another computer and use that computer's tor connection, e.g downloading a file over tor: torsocks --address my....
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61 views

File Quarantined by Anti-Virus Software from the Latest Upgrade of Tor Browser

I upgraded to the lastest version of Tor browser 9.0, and my antivirus software 360 Safeguard reported the file nssdbm3.dll being infected by trojan win32/Trojan.7be Could anybody tell me if this is ...
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1answer
142 views

Multiple outgoing connections from Tor browser

I see a lot of unknown outgoing connections from tor.exe to different IP addresses (about 6-7) every time Tor browser first connects to Internet after its installing. Only Tor entry guard remains with ...
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1k views

How do I load Tor-Browser with Wayland?

Firefox functions in Fedora/CentOS with Wayland, Tor-Browser should too. No Xorg necessary. How do I launch Tor-Browser under Wayland? Thank you!
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Despite your own stupidity, how can Tor Browser fail?

Assuming there are no mistakes done on your own side, (how) can Tor Browser still fail? Is it really possible you get connected to three relays that are in the hands of someone bad? Are there any ...
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51 views

can one tab "look" at it's nighbor tab and 'read' its data?

I am on Linux. I use Tor mainly to browse on high(er) risk sites, like torrents and such. Would it be safe to run my gmail account on one tab (of Tor) and on the other tab, to get into a "risky ...
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1answer
191 views

Does deanonymization only affect the current session?

Say I'm using Tor, and I make an error by, for example, logging into an account on a website. Will this deanonymization only affect my current session, since I can just restart my browser and get a ...
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2answers
221 views

Tor and Folder Lock

I'm writing a novel, and one of my characters is into some illegal activities on the web. He's ultra-paranoid about security, so uses Tor...but he doesn't want anyone who might snoop in his computer ...
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119 views

RSA keys explanations

I am currently reading the Tor Spec (and other Tor-related technical documents) and have some questions about RSA keys. I can't understand why the "connection key" is used to establish the TLS ...
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196 views

is it safe to rename firefox.exe?

OK so I am using some program that acts like a big bag of whatever you put inside it, pinned to a taskbar, so you can access tons of different programs that you put inside it (.exes) from right ...
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2answers
1k views

Hosting Site as Hidden Service

Is it advisable to host a very lightweight (less than 300 KiB per page, including all images, stylesheets etc.) general purpose site as a hidden service? I do not expect there to be many users (...
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1answer
280 views

Does Tor Work With Secret Agent

Does Tor Work With Secret Agent? Secret Agent can be found here. Will Tor break and/or is it a bad idea?
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137 views

Hacking Tor in my spy/thriller novel

Question: What are plausible circumstances in which one could hack an individual Onion Router to discover the location of the previous router? Reason: I’m an aspiring writer, working on a spy-...
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279 views

Does running multiple Tor instances with multiple exit nodes this way really compromise Tor security?

I have followed steps in this article and could successfully run two tor instances with different exit nodes (IPs duplicate if more than 2 nodes are used) and checked Tor status using following sites ...
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1answer
8k views

Tails/Tor Browser not connecting to the internet

I have been using Tails successfully for a little while now. However, once I removed the HDD from my computer and then tried using Tails, the Tor Browser would not connect to the internet. THe onion ...
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94 views

How can I set the firewall rules on Iptables without them getting deleted?

I am sending command line commands to the Iptables. Once I set these rules I connect to my router. on connecting all the rules I just add is removed and only the original firewall rules that tails has ...
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1answer
712 views

How to close tails firewall port?

I need to closing two or more open firewall ports in tails. How can I send the command to do this?
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440 views

XSS errors with recent update

I have been using Tor for about a year now and been happy with the project, at least until the last update 5.5.4, which is behaving oddly. :(( One site I used to visit often was mail.com, where I ...
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15k views

Why is video/mp4 and video/webm blocked by noscript in TBB?

Is it safe to disable the default blocking? Why was it added/turned on? Having to click 'temporary allow' and sit through a page reload every time I want to watch a video or load one when scrolling ...
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443 views

Am using Tor now w/a VPN. How did MSN pinpoint my location? Screenshot

What is going on? Am using Tor Browser along with "Strong VPN." Just signed out of my Hotmail which, at first, showed U.K. stories on its homepage. But now that I'm about to sign back in, my real ...
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3k views

Is it safe to run Avast with Tor

Is it safe to run Avast with Tor? I currently use Avast, but I've understood that Avast, as other anti-virus programs, send and log a lot of data about any browser that is being used. Are there some ...
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306 views

Hidden service private key chain

Can a certificate chain be used for a hidden service's private key? It would be nice to be able to periodically re-sign a public key and upload it to the host. This would mean that in the case of the ...
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3k views

Reason behind "clearnet warning" when posting URL links on onion websites

When browsing onion websites e.g. discussion forums, quite regularly I will encounter links to clearnet http/https addresses along with an explicit Clearnet Warning along with the URL. What is ...
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48 views

Tor time-size attack

What makes it impossible for spying agencies to track whom the user is communicating to by guessing to which packet coming in corresponds a packet going out, based on the very small difference in time ...
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25 views

Do secure channels provide a good means for asking bridges in order to stay annonymous

After going through this post Do utilization of bridges and/or Pluggable Transports bridges hinder anonymity? I ask is there any secure communication channel through which we can receive bridges as ...
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44 views

Security leak in TBB 3.6.2! Leaking information about installed fonts

No matter what I do, what add-on I installed up to now. On chrome://stopfingerprinting/content/common/options.html my TBB 3.6.2 reveals exactly what fonts I've installed, making me obviously ...
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94 views

OpenSSL ROP hack/backdoor(OBVIOUS)/bug

Is the ROP hack/BACKDOOR(obvious)/bug in OpenSSL -coded form OpenSSL member/programer Andy Polyakov- still a problem in Tor code?
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1answer
16 views

Rebuttal to Sven Taylor's article on Tor?

In October 2019, Sven Taylor published a sobering article titled Is Tor Trustworthy and Safe?. In it he argues that (numbering mine), US government agencies can de-anonymize Tor users on a “wide ...
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2answers
141 views

What precautions should I take if I want to use Tor to hide my traffic from my University?

I am student at university and use university internet. I am interested in using Tor to prevent my university from seeing what sites I visit and what I am doing on those sites. As I understand it now, ...
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55 views

Security question regareding Tor & Anonsurf

So I have been using Parrot Security lately and I have a couple security questions regarding Tor/Anonsurf. First, when I boot up Parrot and open the Tor Browser and click connect, Tor connects, then ...
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1answer
34 views

What are the botnets that can be used on tor?

I am a student and want to study botnets on tor, so I would like to ask what are the botnets that can be used on tor, preferably controlled through C&C. It would be nice to have the source code of ...
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57 views

Tor and i2p tradeoffs

Bitcoin Core supports running onion service and recently added i2p. I want to understand the trade-offs in using different combinations of networks, so asked a question in Bitcoin SE earlier: https://...
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49 views

Would this be a reasonably secure website?

If this is something for the Information Security Stack Exchange I understand. I want to know if this hypothetical setup is reasonably secure to the point where it can't be conventionally hacked ...
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23 views

.jar scrapping app in tails

morning. im finishing java app to scrap few websites. its gonna be runnable jar file. my goals: do it over tor network & keep security and privacy of tails. my questions: since tails is sending ...
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"Brave will open onion service of the website when available or .onion domain in Tor window"

I downloaded the Brave browser and the it is an option within its settings to open an .onion domain in a Tor window. However I do not have Tor downloaded on my device. I read one article that said to ...
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18 views

Tunneling RDP under obsf4

I want to run tunnel between my local and RDP under obsf4 bridge. Can anyone explain me how can i do this? I use ubuntu, and krdc to connect on rdp. Thanks!
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44 views

Encrypted DNS without Tor Browser Bundle

If using Tor and NOT Tor Browser Bundle, do you need to encrypt your dns or is setting your DNS on router to Cloudflare DNS sufficient? wanting to obfuscate all DNS from view of ISP
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1answer
74 views

Is there a safe way to access this site

" https://thewest.com.au/digital-edition?utm_source=SSW&utm_medium=Referral&utm_campaign=digital-edition&utm_term=read-the-digital-edition&utm_content=top-nav " I am a paid ...
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1answer
567 views

How does JavaScript interfere with Tor browser anonymity?

Heard that JavaScript interferes with Tor when browsing the internet causing a breach in its security wall, having the effect of a hole in the ozone layer. Why is this? How does this breach work ...
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Besides MAC address, how else do public wi-fi networks identify connected hardware devices?

The list of connected WLAN clients (users) on my wi-fi only gives the following fields per user: Duration of time connected IP address MAC address Device name The last two fields are always unique ...