Hot answers tagged

136 votes
Accepted

Tell browser my site has no scripts

A good option is to harden your Content Security Policy. It allows you to fine-tune which resources the browser will load/run, and is supported by most browsers. Consider the following header: ...
  • 1,845
113 votes

How would a resourceful government block Tor?

Tor is used to circumvent censorship! No, not directly. Tor is about anonymity, not about availability. Tor alone does not help its users access blocked content. Tor helps by making it hard to link ...
110 votes
Accepted

How would a resourceful government block Tor?

In order to block Tor, all that has to be done is have the current list of Tor nodes which can be found at the following link: http://torstatus.blutmagie.de/ip_list_all.php/Tor_ip_list_ALL.csv and ...
  • 14.1k
82 votes
Accepted

How to detect if employees are using Tor?

You can use a list of Tor (uplink) nodes, add this to the outgoing firewall, setup a task to update this once a day and you'll be good. But Tor can also be used over a HTTP(S) proxy, so you will have ...
66 votes

Can anti-virus/virus protection be used to spy on you?

Any software you install on your system can compromise the system and thus affect security and privacy. This can be done either willingly or because of bugs in the software. And this is doubly true ...
60 votes
Accepted

Differences between using Tor browser and VPN

TL;DR Tor provides anonymous web browsing but does not provide security. VPN Services provides security (sort of) and anonymity, but the anonymity might be more in question depending on the service. ...
  • 12.3k
59 votes

Can my workplace view my Tor traffic?

First: Don't use work computers for personal use, people! Many network policies forbid personal use. Our policy states that personal use is not forbidden but is monitored. If you don't want to be ...
  • 3,707
53 votes

How to detect if employees are using Tor?

I believe your major concern should be that: using anonymous proxy in the network Is a bad assumption. I would straight away ask: In which network? Yorick already touched this point but I'll be ...
  • 5,687
47 votes
Accepted

Why hasn't anyone taken over Tor yet?

They might do it already, there is a known technique to dedicate malicious and powerful nodes to the network to be able to take control of some of the traffic. Tor does not advertise itself to be able ...
  • 3,369
44 votes

How can you be tracked using screen resolution/monitor size in Tor?

Perhaps it's worth mentioning that the impact of resizing your browser on your privacy heavily depends on what window size you set. Maximizing Tor browser on a screen with a standard resolution like ...
42 votes
Accepted

How did the FBI compromise Tor users?

The article you link says that the FBI obtained "the MAC address" for the user computers. MAC addresses are specific to each ethernet hardware, and they don't travel beyond the first hop -- meaning ...
38 votes

How would a resourceful government block Tor?

Tor will be actually quite hard to block because of tor bridges: Bridge relays (or "bridges" for short) are Tor relays that aren't listed in the main Tor directory. Since there is no complete ...
38 votes
Accepted

Why is Home --> VPN --> Tor worse than Home --> Tor?

Preface: I consider this question to be a false dichotomy and an inversion of the burden of proof. One of the core tenets of building secure systems is that you minimise the attack surface, and resist ...
  • 132k
32 votes
Accepted

Can my workplace view my Tor traffic?

Generally speaking No. Assuming: You follow Tor's best practices Tor does not protect all of your computer's Internet traffic when you run it. Tor only protects your applications that are ...
  • 4,188
31 votes
Accepted

How does the hacker manage to spoof a different IP address?

TOR, VPN, bots, proxies, you name it.. The source IP is not "spoofed" per se... it's the real deal. If someone really spoofed a source IP, they couldn't establish a TCP connection or receive any ...
29 votes

How did the FBI compromise Tor users?

The article you posted states how they did it. But the author doesn't seem to be knowledgeable on the subject and it got lost in the article. They didn't crack Tor and more so found a way to collect ...
  • 3,340
23 votes

Is it safe to access HTTP sites from Tor?

No, it is not safe. But the reasoning your read is wrong. When you use Tor, the connection between you and the Tor network is encrypted, so your ISP can not eavesdrop. But when you access a normal ...
  • 48.9k
21 votes

Differences between using Tor browser and VPN

A VPN means your connections pass through one other server. The administrator of your network can't see anything but the fact that you're talking to that VPN server; the administrator of the computer ...
  • 7,223
20 votes

What is this potential identity leak that NoScript warns about?

So after some digging into NoScript's settings, I found some settings for something called "Cross-tab identity leak protection". Googling this led to a tor project issue Targeted ...
  • 11.3k
17 votes

Stop large requests to my server (TOR)

You could drop packets from tor nodes all together if you like with ip tables. List of tor nodes can be found at: Ref 1: https://check.torproject.org/cgi-bin/TorBulkExitList.py Ref 2: https://www....
  • 807
16 votes
Accepted

Does Tor help us to prevent ISP tracking?

You cannot hide how much data you are sending and when you are online. But, Tor encrypts data and sends it through proxies before it reaches the target server, so that hides the contents of the ...
  • 32k
15 votes
Accepted

Is there any difference between visiting Facebook via their Tor address, and visiting them via their normal address over Tor?

Here is what using Tor to access an ordinary, non-onion facebook URL looks like: You -> Tor... -> facebook.com Now both of those links (from you to Tor and from Tor to facebook.com) happen on ...
  • 166
14 votes

Can someone use WiFi snooping to see data I send through Tor Browser when I'm not using SSL?

When you use Tor, all data is encrypted between your computer and the exit node. As long as the exit node isn't on the same network that you are on (very, very unlikely to occur), the data will be ...
14 votes
Accepted

Why is the data from a Tor exit node not encrypted?

Encryption of traffic exiting Tor and going to the destination server is based on whether the destination server supports encryption, and whether the destination server was addressed on an encrypted ...
  • 72k
13 votes

How can you be tracked using screen resolution/monitor size in Tor?

Client-side code (JavaScript) on a web site you visit has access to screen resolution and other settings. Often the combination of these settings are unique enough to match your current session (...
  • 6,807
13 votes

Is it safe to access HTTP sites from Tor?

It depends. Specifically, it depends on the type of data you are accessing and your threat model. What protection does HTTPS provide with Tor? Here is a breakdown of some potential adversaries at ...
13 votes

How to detect if employees are using Tor?

The only way you can be relatively sure Tor is not in use on the network is to inspect every device on the network and ensure that Tor is not installed or running on any of them. This could require so ...

Only top scored, non community-wiki answers of a minimum length are eligible