I must change the security settings of Tor browser to the lowest to be able to play a Video online, yet i have not tried it till now.

That is why i got to think, whether it is unsafe to play online Videos or play something online that requires javascripts

  • 2
    Using a work computer is unsafe, Tor or not. The computer could be running a program that takes screenshots of your activity or logs keystrokes, and Tor (or any anonymization tool) won't protect about that. Dec 12, 2016 at 14:12
  • @AndréBorie agreed. The other question is also marked as a duplicate so I marked this one as a duplicate of that question.
    – Limit
    Dec 12, 2016 at 15:30
  • I don't see this as a real duplicate since the other questions do not really consider the case that the user is not in full control of the computer. But this is specifically the case here, i.e. "... from a work computer (not mine)". One of these question at least considers use of work network but none considers use of work computer, i.e. a system which should be considered untrusted. Dec 12, 2016 at 15:37
  • @SteffenUllrich the answers do cover that case well enough IMO. Dec 12, 2016 at 16:31
  • @AndréBorie: you are right that Can my workplace view my Tor traffic? does answer it but unfortunately is marked as duplicate to questions which don't care about this important aspect. It might be useful to reopen it (i.e. no longer treat as duplicate) and instead close this one. Dec 12, 2016 at 16:42

3 Answers 3


If you do it from a work computer it might be that this computer has software installed to monitor your activity. And even when it does not the IT department might at least detect that you are using Tor. And chances are high that you've signed a policy that use of technologies like Tor, VPN or similar is not allowed at work.
But these are just possibilities. It depends a lot on where you live, what kind of policies you have there and how knowledgeable the IT department is.

To summarize: no matter if the system is monitored and no matter if the IT department continuously checks the network for forbidden activity, if there is a policy in place which forbids what you are trying to do then you should not do it if you want to keep your job. Policy violations can also be detected by chance when researching different problems or could be reported by coworkers.


Main video sites will like youtube will have HTML5 support. The only sites that don't have this and you need to downgrade for would probably be porn.

Like Steffen said, if they have monitoring software on the machine it might not matter because they can watch your screen.

If you're really suspicious, boot the PC from a USB stick and use tor there. If you're still paranoid, run a Whonix VM

  • If you run a different system than provided on the machine the IT department might detect this too. If one cares about job security one should better check first what is allowed and what not and prefer personal devices and personal internet to access stuff which is unrelated to work. Dec 12, 2016 at 14:46

This interactive image from Electronic Frontier Foundation will definitely answer your concern and beyond it :
enter image description here

So the answer is that the IT Dept (Hacker in the image) and Your ISP can't see what you are browsing.

  • 2
    This graphic does not even consider that the computer used is not in full control of the user which is typical for a system provided by the employer. Dec 12, 2016 at 14:53
  • @SteffenUllrich indeed this goes to the core of question, double-check the title :**Can Tor Browser prevent** before downvote.
    – elsadek
    Dec 12, 2016 at 14:56
  • If you use Tor Browser on a system which might be monitored by the employer (as in this specific case) the employer can still see what you do, no matter if you use Tor or not. Tor browser requires that the user is in full control of the underlying OS which is usually not the case when using a system at work. Dec 12, 2016 at 14:58
  • The OP is obviously using the Tor browser, and this is what he is looking for as an information. Monitored or not this might be a different concern
    – elsadek
    Dec 12, 2016 at 15:05
  • But this "different concern" is exactly what the OP is asking about. double-check the title: ...from a work computer (not mine). Dec 12, 2016 at 15:07

Not the answer you're looking for? Browse other questions tagged or ask your own question.