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To access internet in college, we need to authenticate the IP and MAC address of our machine at a certain college portal. Earlier we used to have to provide proxy authentication every time the browser opened, but they changed it to this recently. However, technically I am still accessing the web using my college proxy(right?). Does the proxy track and log my Tor browser bundle history?

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No. Unnless they have direct access to your machine(malware / trojans) they cannot see your history.

  • I'm a little confused. To reach the TOR relays, the data request first goes through my college proxy right? Thanks for the quick reply! – user3438 Aug 19 '14 at 11:29
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    Yes but its all encrypted. So they only see a encrypted stream but not the data in it. They can know you use tor but not what you access with it. – Stig Atle Steffensen Aug 19 '14 at 11:31
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Unless they are running endpoint (client) tracking software, it's unlikely they will be able to see your Tor browsing history.

However, they can see the dates/times when you're using Tor, as well the dates/times that their own web services were accessed via Tor. They might be able to do some traffic correlation.

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They cannot see your history in the sense that they cannot see what you are doing on Tor. However, unless you're using a bridge[1], they can tell when you're connected to the Tor network. Below is the most memorable example of someone misunderstanding that concept:

http://www.theverge.com/2013/12/18/5224130/fbi-agents-tracked-harvard-bomb-threats-across-tor

[1] And even if you were using a bridge, they could find out if they were trying hard enough.

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If in some period of time Firefox (on which is based TBB) or any other browser you are using is vulnerable to 0-day exploit that allows on remote attacker to access parts of the browser memory or files - yes, only in this case, someone can read your history / bookmarks / settings, etc. But serious vulnerabilities like this are rare in browsers, so just be sure that your software is up-to-date.

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